[TASK] Adjust php-cs-fixer rules

The php-cs-fixer rules have been adjusted by the following settings:

- no_empty_phpdoc: Remove empty phpdoc blocks without any information
- no_null_property_initialization: Remove initial null value from
  class properties
- modernize_types_casting: Replace old-school `*val()` function calls
  with proper type casts

Resolves: #88802
Releases: master
Change-Id: Id2cfa849553d918e0461bafd09b3960bdf5ff700
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/61324


Tested-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Frank Naegler <frank.naegler@typo3.org>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Reviewed-by: Daniel Windloff
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>