[TASK] Add functional test for route enhanced link handling

* adds test cases for resolving and generating enhanced links
* fixes locale issues when dealing with persisted mappers
* removes PersistedAliasMapper.valueFieldName and uses TCA
  'uid' field per default, which is required for proper
  language based resolving as well
* introduces language based resolving to PersistedAliasMapper
  and PersistedPatternMapper

Resolves: #86444
Releases: master
Change-Id: Ib9c9ea8efc25a8a5adb727f8402a2b6b1e6a1602
Reviewed-on: https://review.typo3.org/58461


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: Benni Mack <benni@typo3.org>
Reviewed-by: Georg Ringer <georg.ringer@gmail.com>
Tested-by: Georg Ringer <georg.ringer@gmail.com>