TERMS aggregates are neither displayed nor editable in saved searches

Studio-side:

1. create simple vocabulary myVocab with several values
2. create custom document model
3. add 2 String fields (A and B) to the customer schema
4. in the layouts, set field A with a Text widget
5. in the layouts, set field B with a Single Vocabulary widget
6. create a Search Content View named mySearchCV
7. set field A as a Terms widget (this should be set as Checkbox by default inside the configuration panel)
8. set field B as a Single Vocabulary widget

Server-side:

1. synchronize Studio project
2. create 2 or 3 documents with values filled in for title, and fields A and B
3. head over to the Search tab
4. select search mySearchCV
5. click one of the field A aggregate values
6. save the search and name it mySavedTestSearch
7. click the Workspace tab
8. select Searches in the left panel
9. observe the TERMS aggregate is not displayed in the Summary tab (see missingTermsValueSummary.png)
10. observe the TERMS aggregate is not displayed in the Edit tab (see missingTermsValueEdit.png) but here a message saying No available result is displayed.

It won't be fixed in 9.10 and master because the JSF UI is deprecated