[BUGFIX] Load global event handler in file browser

The "display thumbnails" checkbox in the
file browser is using the global event handler
functionality. This checkbox is now working
again by loading the required JS module, which
was previously available due to the indirect usage
of the ModuleTemplate.

Resolves: #99601
Releases: main
Change-Id: I7872b750d183ec77fb80c35d5ba4a03ed94af8ef
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/77468


Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Oliver Bartsch <bo@cedev.de>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>

typo3/sysext/backend/Classes/ElementBrowser/FileBrowser.php

@@ -103,6 +103,7 @@ class FileBrowser extends AbstractElementBrowser implements ElementBrowserInterf
         $this->pageRenderer->loadJavaScriptModule('@typo3/backend/browse-files.js');
         $this->pageRenderer->loadJavaScriptModule('@typo3/backend/tree/file-storage-browser.js');
         $this->pageRenderer->loadJavaScriptModule('@typo3/backend/multi-record-selection.js');
+        $this->pageRenderer->loadJavaScriptModule('@typo3/backend/global-event-handler.js');
 
         $thumbnailConfig = $this->getBackendUser()->getTSConfig()['options.']['file_list.']['thumbnail.'] ?? [];
         if (isset($thumbnailConfig['width']) && MathUtility::canBeInterpretedAsInteger($thumbnailConfig['width'])) {