[Welflo]

Summary

Closes the reported gaps in the German documentation for Robot Framework Browser 21.0.0. Checksums remain unchanged because the translations are already at the 21.0.0 baseline.

Changes

• Translate and update the recorder keyword documentation.
• Clarify selector chaining, >>> iframe traversal, Shadow DOM behavior, and the label engine.
• Document adoptContext and defaultTimeout for jsextension.
• Explain the type values returned by the browser catalog.
• Document relative recordHar paths and add the RecordVideo reference.
• Link the evaluate_javascript selector argument to “Finding elements”.

Verification

• inv validate --language de --target 21.0.0 --warnings: no errors; warnings concern intentionally translated keyword references.
• Unit tests: 32 passed.
• Acceptance tests: 6 passed.
• Ruff and Mypy: passed.
• inv lint: Robocop reported formatting changes in existing acceptance files. Those changes were reverted, so the full lint task is not reported as passing.