[BUGFIX] Cast invertStateDisplay to bool in SelectItem

Oftentimes bool values are provided as integer in TCA. Therefore, a cast
to bool is needed for invertStateDisplay.

Note: Error might happen in itemsProcFunc for checkbox fields.

Resolves: #100275
Related: #99739
Releases: main
Change-Id: I14c2e798385250b40a7d4e4a73cbc157618a7a0f
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78234


Tested-by: Oliver Klee <typo3-coding@oliverklee.de>
Tested-by: core-ci <typo3@b13.com>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Nikita Hovratov <nikita.h@live.de>
Tested-by: Nikita Hovratov <nikita.h@live.de>