[TASK] Remove BackendUserRepository injection in NoteController

To improve the performance of sys_note rendering, the injection can
be skipped as the current user id can be used directly.

Resolves: #82506
Releases: master
Change-Id: I40b04ac725628f4dcfb3f1e5a280edf9c8e545f9
Reviewed-on: https://review.typo3.org/54166


Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>
Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Susanne Moog <susanne.moog@typo3.org>
Tested-by: Susanne Moog <susanne.moog@typo3.org>