[BUGFIX] Set actionName for adding online media

The property `actionName` is added to the window message to allow adding
media from the "Add media by URL" again. To prevent such issues in
future, a new interface is introduced which renders `actionName`
mandatory.

Resolves: #90626
Releases: master
Change-Id: I925da0476f2f29bd9394c723369b68429e59b545
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/63538


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Christian Eßl <indy.essl@gmail.com>
Tested-by: Daniel Goerz <daniel.goerz@posteo.de>
Reviewed-by: Christian Eßl <indy.essl@gmail.com>
Reviewed-by: Daniel Goerz <daniel.goerz@posteo.de>