[BUGFIX] File collection should request update after changing the storage

Currently the form is not reloaded if you change the storage inside a
file collection record.
You need to save the form before you can select a folder.

Automatically reload the form after changing the storage.

Fixes: #47007
Releases: 6.1,6.0
Change-Id: Ide6dddca64707f7f353aecc98943c79afd9eec78
Reviewed-on: https://review.typo3.org/19718
Reviewed-by: Alexander Opitz
Tested-by: Alexander Opitz
Reviewed-by: Steffen Ritter
Tested-by: Steffen Ritter