[!!!][TASK] Drop bootstrap jQuery interface and window.jQuery

The bootstrap jQuery interfaces required a global window.jQuery
variable to be set. The jquery drop-in is dropped in order to
remove this non-optional jQuery dependency.

As a side effect the window.jQuery global is removed as well.
Note that global jQuery usage has already been deprecated in #86438
and removed in #97243 with the suggestion to use JavaScript modules
instead. window.jQuery was basically left in place for bootstrap to
operate and therefore only `window.$` was removed back then, while
`window.jQuery` stayed for the time being.

Resolves: #101820
Related: #97243
Related: #86438
Releases: main
Change-Id: I6b46ceb3e3e3e3cf892925c4442255febdfb5a33
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/74055


Tested-by: Andreas Kienast <a.fernandez@scripting-base.de>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Andreas Kienast <a.fernandez@scripting-base.de>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: core-ci <typo3@b13.com>