[TASK] Doctrine: Migrate ext:backend/Tree/Pagetree/DataProvider

Change-Id: Ia38c92afbd26e08dd8e05303c5f703238f8ab578
Resolves: #77273
Releases: master
Reviewed-on: https://review.typo3.org/49245


Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Bamboo TYPO3com <info@typo3.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>