[TwigBridge] fixed trans twig extractor
merged branch jfsimon/issue-6943 (PR #7206)

This PR was squashed before being merged into the 2.1 branch (closes #7206).

Commits
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bae83c7 [TwigBridge] fixed trans twig extractor

Discussion
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[TwigBridge] fixed trans twig extractor

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #6943