[TASK] Skip localization mode selection in localization wizard

In case only one localization mode is available, e.g.
because a localization mode was already defined for
the translated page or only one mode is allowed by
configuration, the selection step is superfluous and
therefore now skipped.

Resolves: #95909
Releases: master
Change-Id: I4a842b0758c9c95744f31f8074a09a1c29f53af2
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/72079


Tested-by: core-ci <typo3@b13.com>
Tested-by: Jochen <rothjochen@gmail.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Jochen <rothjochen@gmail.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Oliver Bartsch <bo@cedev.de>