[TASK] Fix deprecated things in sysnote

The extension sysnote uses deprecated methods in the repository and
the controller. This patch will adjust that.

Fixes: #45349
Releases: 6.1

Change-Id: I7270efb264b80eb852ad972e8a492c0941e83be2
Reviewed-on: https://review.typo3.org/18194
Reviewed-by: Christian Kuhn
Tested-by: Christian Kuhn

typo3/sysext/sys_note/Classes/Controller/NoteController.php

@@ -55,7 +55,7 @@ class NoteController extends \TYPO3\CMS\Extbase\Mvc\Controller\ActionController
 		if (empty($pids) || empty($GLOBALS['BE_USER']->user['uid'])) {
 			return '';
 		}
-		$author = $this->backendUserRepository->findByUid($GLOBALS['BE_USER']->user['uid']);
+		$author = $this->backendUserRepository->findByIdentifier($GLOBALS['BE_USER']->user['uid']);
 		$notes = $this->sysNoteRepository->findByPidsAndAuthor($pids, $author);
 		$this->view->assign('notes', $notes);
 	}

typo3/sysext/sys_note/Classes/Domain/Repository/SysNoteRepository.php

@@ -40,7 +40,7 @@ class SysNoteRepository extends \TYPO3\CMS\Extbase\Persistence\Repository {
 	public function initializeObject() {
 		$querySettings = $this->objectManager->get('TYPO3\\CMS\\Extbase\\Persistence\\Generic\\Typo3QuerySettings');
 		$querySettings->setRespectStoragePage(FALSE);
-		$this->setDefaultQuerySettings($querySettings);
+		$this->persistenceManager->setDefaultQuerySettings($querySettings);
 	}
 
 	/**