The locale E2E tests (de->ar and de->pt-BR) were flaky because they used
a brittle CSS selector (.bg-default > div > div:nth-child(2)) to click
the language dropdown. This selector was susceptible to react-select's
internal Input wrapper element intercepting pointer events.
Changes:
- Add data-testid='locale-select' to the language Select in general settings
- Replace CSS path selectors with getByTestId('locale-select') in tests
- Replace text selector for pt-BR with getByTestId('select-option-pt-BR')
Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
