Take into account the deletion behavior when handling deleted files at startup

In Nuxeo Drive 4.1.0 we introduced a "deletion behavior" to change the way file deletions are impacted on the server (cf NXDRIVE-1501 ). It appeared to be effective only when the application was running. But it will not be taken into account when files were deleted while the application was not running. In that scenario, when the chosen deletion behavior was to simply unsynchronize documents, it would just delete files on the server. That is now fixed and in such scenario, if the user did not choose any deletion behavior, then the default action will be to unsynchronize files to prevent unwanted remote deletions.