[TASK] Improve TranslateViewHelper compiling

This patch improves the TranslateViewHelper by letting
it be compiled to a single line of null-coalescing code
in the Fluidtemplate. Since the ViewHelper is one of the
most frequently used, saving method calls and condition
checks here gives a nice result.

Removes the need to load the VH class if all templates
are compiled, further saving some calls and checks.

Change-Id: Ifd3b051305d3cb631d3e8413bac40b4766136aef
Resolves: #82454
Releases: master
Reviewed-on: https://review.typo3.org/54119


Tested-by: TYPO3com <no-reply@typo3.com>
Reviewed-by: Mathias Schreiber <mathias.schreiber@typo3.com>
Tested-by: Mathias Schreiber <mathias.schreiber@typo3.com>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>