[BUGFIX] Properly trigger `change` event in LinkBrowser

With #93975 the LinkBrowser was not able to write back a selected page to
FormEngine. The reason is that the input field has no `onchange`
attribute anymore, thus its event handlers cannot get processed.

The `change` event is now dispatched properly to trigger both, event
listeners and "old-school" onchange handlers.

Resolves: #94002
Related: #93975
Releases: master
Change-Id: I97505c078602f3670c390e48cff0cc6fc96bcdcd
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/68899


Tested-by: core-ci <typo3@b13.com>
Tested-by: Oliver Bartsch <bo@cedev.de>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Benni Mack <benni@typo3.org>