[TASK] Use BackedEnum for LikeWildcard

PHP 8 introduced native Enumerations,
which can now be used instead of our own
implementation from TYPO3 v7.

Enums are effectively singletons making
it much faster than previously when
used many times.

Since LikeWildcard in indexed search is
internal and only used internally within
indexed search, the usage is rather small.

Resolves: #100213
Releases: main
Change-Id: I4d3f60c7d4b91e921271487c8688036939403805
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/78162


Tested-by: Stefan Bürk <stefan@buerk.tech>
Tested-by: Georg Ringer <georg.ringer@gmail.com>
Reviewed-by: Stefan Bürk <stefan@buerk.tech>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: core-ci <typo3@b13.com>