[QA] moving a folder containing a received share into another received share breaks apart

Seen with oc 10.8.0-beta2 while testing https://github.com/owncloud/core/pull/38767

• admin creates "folder1/path/to/file.txt" and "folder2/pot/too/fool.txt"
• admins shares "folder1" and "folder2" with user1.
• user1 moves "folder2" (shared) into "folder1 (shared)"
• Move is prevented and no file scan happens. -> The move is expected to fail. The proper error message appears:
  Could not move "folder2": There was an error while renaming the file or directory
• user1 also has a (not shared) folder Documents. user1 moves folder2 into Documents,
• user1 moves Documents into folder1. -> No error message appears. BAD
• the user interface indicates that the entire hierarchy of Documents was moved into folder1, this is not true. BAD
• in reality (seen after a shift reload) user1 can see, that folder2 appears on toplevel, (next to folder1) while Documents was indeed moved into folder1

Expected behaviour:

• The same error message appears, as if directly trying to move folder2 into folder1
• the UI indicates shows the resulting folder structure immediately (no need for shift reload)

Reproduce the listed move sequence on ownCloud 10.8.0-beta2 and review the move-related changes in pull request 38767. Done means the same error appears when the nested received share is moved, and the UI immediately shows the actual resulting folder structure without a reload.