[BUGFIX] Respect old delimiter syntax in FileBrowser

With #102992, the delimiter for the allowed
/ disallowed list in the `bparams` parameter
has been changed from `;` to `~`. To not break
the display in the FileBrowser, the old syntax
is respected as fallback in v12 with corresponding
deprecation message.

Resolves: #103178
Related: #102992
Releases: 12.4
Change-Id: Ie5ff38bb2c4c898e8c45fca02da08f9adb16619e
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/83180


Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Jochen Roth <rothjochen@gmail.com>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: core-ci <typo3@b13.com>
Tested-by: Benjamin Kott <benjamin.kott@outlook.com>
Reviewed-by: Jochen Roth <rothjochen@gmail.com>
Reviewed-by: Benjamin Kott <benjamin.kott@outlook.com>