BUGFIX: Set language by dimension in fusion (for translations)

[ClaraRuna]

Issue: #4930

Review instructions

From 8.3 to 9 in Neos\Neos\View\FusionView::render the function-call to Neos\Neos\View\FusionViewI18nTrait::setFallbackRuleFromDimension that sets the content dimension language got lost. This PR reinserts it.

FusionView Tests are currently marked as skipped because they have to be rewritten.

Checklist

There is no concept for testing Fusion views so far, but the fix was tested manually by the author

• Code follows the PSR-2 coding style
• Tests have been created, run and adjusted as needed
• The PR is created against the lowest maintained branch
• Reviewer - PR Title is brief but complete and starts with FEATURE|TASK|BUGFIX
• Reviewer - The first section explains the change briefly for change-logs
• Reviewer - Breaking Changes are marked with !!! and have upgrade-instructions

[kitsunet]

Cool, that seens easier than I feared it might be :)

[ClaraRuna]

The difficult part is actually writing the tests ^^

[ahaeslich]

The difficult part is actually writing the tests ^^

@ClaraRuna will the tests be part of this PR?

[ClaraRuna]

I'd suggest merging it as it is. @mhsdesign and some others discussed the topic of writing beehat tests for fusion views, but it seems to be a topic that will still beed some time.

[dlubitz]

Thank you! Looks pretty straight forward.