nuxeo-quota addon: initial computation of quotaStatsUpdater 'documentsSizeUpdater' does not work properly

Counters totalsize and innersize of documents (with blob and their parents) increase every time the initial computation of quotaStatsUpdater 'documentsSizeUpdater' is launch.

How to reproduce:

• empty database
• install nuxeo-quota addon
• start Nuxeo Platform
• create a File with a file attached (file size 6611 bytes)

  SELECT * FROM public.documents_size_statistics;
                    id                  | maxsize | totalsize | sizetrash | sizeversions | innersize 
  --------------------------------------+---------+-----------+-----------+--------------+-----------
   2bc59b3f-b25b-4d69-9d47-e013382f1631 |      -1 |      6611 |         0 |            0 |         0
   3b1476e9-2906-4312-92be-a2c81a61c7b6 |      -1 |      6611 |         0 |            0 |         0
   1dd48779-ff5e-4893-8745-7c6dc22fcb72 |      -1 |      6611 |         0 |            0 |         0
   d92cfd4a-979c-4bc2-8507-a185191e437b |      -1 |      6611 |         0 |            0 |      6611
   6490e5d7-8c0b-4ec5-81ac-35de98ec7735 |      -1 |      6611 |         0 |            0 |         0
  (5 rows)
  

• run Quota Updater, counter innnersize and totalsize of File document previously created increased (see table documents_size_statistics)

  SELECT * FROM public.documents_size_statistics;
                    id                  | maxsize | totalsize | sizetrash | sizeversions | innersize 
  --------------------------------------+---------+-----------+-----------+--------------+-----------
   0ce401df-abd3-4a8c-a326-f4005b40c092 |      -1 |         0 |         0 |            0 |         0
   3e2a0a82-12ea-49fa-be10-daae2be17fde |      -1 |         0 |         0 |            0 |         0
   df03f379-1f69-440b-be80-cdaa62bb2e18 |      -1 |         0 |         0 |            0 |         0
   1dd48779-ff5e-4893-8745-7c6dc22fcb72 |      -1 |     13222 |         0 |            0 |         0
   d92cfd4a-979c-4bc2-8507-a185191e437b |      -1 |     13222 |         0 |            0 |     13222
   47ff3f79-52fd-4eac-9b07-86f08c3a267a |      -1 |         0 |         0 |            0 |         0
   fd2a83bf-6438-4a94-ab27-3dff56b92cba |      -1 |         0 |         0 |            0 |         0
   06dc02ff-c215-4505-bf64-32f838df8ef9 |      -1 |         0 |         0 |            0 |         0
   8a9310e6-ba2f-4392-aab7-58b9322772a4 |      -1 |         0 |         0 |            0 |         0
   6fe18bc0-2cde-4033-adb3-a99a865ef9bc |      -1 |         0 |         0 |            0 |         0
   aa0d36aa-16c8-4aca-8ba6-e45208c4ee2b |      -1 |         0 |         0 |            0 |         0
   b3df4211-fe2d-4bb0-804f-6280b6253255 |      -1 |         0 |         0 |            0 |         0
   1b914623-6039-468e-aea2-5659f2e8ac7d |      -1 |         0 |         0 |            0 |         0
   b1600fd9-eb80-404f-a04c-9ebccd9173f9 |      -1 |         0 |         0 |            0 |         0
   b61892d7-1ae4-47b8-92f9-9e87f4898c14 |      -1 |         0 |         0 |            0 |         0
   8d6ffff5-075e-4025-b199-eb9989bcaaad |      -1 |         0 |         0 |            0 |         0
   19138ed0-8f63-4f55-9f11-238e1b14f291 |      -1 |         0 |         0 |            0 |         0
   5b70ae96-5adf-4830-9a2e-df1cb594c5cd |      -1 |         0 |         0 |            0 |         0
   c713e867-661c-4027-b1c5-d5d7fc7d2ac1 |      -1 |         0 |         0 |            0 |         0
   2af5c396-8d6f-4a8a-b270-d03d2ade9b67 |      -1 |         0 |         0 |            0 |         0
   4d4fe89e-2503-4e74-a064-2c550ae59515 |      -1 |         0 |         0 |            0 |         0
   e742f654-8ab3-4cb9-a547-e04794a82236 |      -1 |         0 |         0 |            0 |         0
   e04939e1-6ac9-4d47-b038-d9aabfe11e51 |      -1 |         0 |         0 |            0 |         0
   eee1b536-e5fa-433a-9434-32e7f6a4e818 |      -1 |         0 |         0 |            0 |         0
   b6c5da6e-fc3f-4a2c-be14-3818f75deece |      -1 |         0 |         0 |            0 |         0
   3d3082e4-dd79-4b25-a624-f7e1cff37ecf |      -1 |         0 |         0 |            0 |         0
   34074385-75f8-4b24-9bf2-cbfde9f1a4e8 |      -1 |         0 |         0 |            0 |         0
   c15f07bd-ac2f-4d52-87c1-412bc7fa4df8 |      -1 |         0 |         0 |            0 |         0
   f18eb927-6c2d-46ff-ada6-542b9d8ed59a |      -1 |         0 |         0 |            0 |         0
   cea2c949-74ea-4030-b6bd-7df31c2670d7 |      -1 |         0 |         0 |            0 |         0
   43f6bebb-72c0-4a12-8c46-4c7773cc867a |      -1 |         0 |         0 |            0 |         0
   8d5c9a3f-e5fb-4441-978f-99368ac7d434 |      -1 |         0 |         0 |            0 |         0
   2ed538b3-378d-4107-a2fc-b8daebdf19ea |      -1 |         0 |         0 |            0 |         0
   7825aba2-235f-4b2f-88d7-be0674c8534c |      -1 |         0 |         0 |            0 |         0
   1d54df7b-409a-4531-a8c8-13df020af12d |      -1 |         0 |         0 |            0 |         0
   276dd016-1dc7-4258-bc07-4182058756c1 |      -1 |         0 |         0 |            0 |         0
   d0cdf86a-932e-4884-912b-51334b0666c5 |      -1 |         0 |         0 |            0 |         0
   3f817172-30f7-4c9d-ab72-b7b80fcb558c |      -1 |         0 |         0 |            0 |         0
   1768d320-256a-4b50-82f0-2e44c1fd2127 |      -1 |         0 |         0 |            0 |         0
   ee6573b8-7d6b-4eca-acea-a4d5faca6eef |      -1 |         0 |         0 |            0 |         0
   cf1b5d94-cc10-44de-8d4d-96c26539b877 |      -1 |         0 |         0 |            0 |         0
   03499a5f-ee9d-4cce-b484-6c63095d495d |      -1 |         0 |         0 |            0 |         0
   600c9854-1db7-4191-bfeb-e45ba9d6e029 |      -1 |         0 |         0 |            0 |         0
   8fab61c4-4ef2-40d9-9e96-240ae42cee5d |      -1 |         0 |         0 |            0 |         0
   c4bff543-bf4e-488b-86cb-c9ee00b2413e |      -1 |         0 |         0 |            0 |         0
   8abeffb0-64c9-4af4-8e9f-db113d232317 |      -1 |         0 |         0 |            0 |         0
   ce6526c8-fd4c-4496-bdb3-b6bb5d67682a |      -1 |         0 |         0 |            0 |         0
   6490e5d7-8c0b-4ec5-81ac-35de98ec7735 |      -1 |     13222 |         0 |            0 |         0
   2bc59b3f-b25b-4d69-9d47-e013382f1631 |      -1 |     13222 |         0 |            0 |         0
   3b1476e9-2906-4312-92be-a2c81a61c7b6 |      -1 |     13222 |         0 |            0 |         0
   5005046c-6dd5-421e-aec2-c85fd3f82d02 |      -1 |         0 |         0 |            0 |         0
   38f37a8a-82ae-416c-82fa-29476556a060 |      -1 |         0 |         0 |            0 |         0
  (52 rows)