Fixes a rare but pernicious race condition that breaks the locale dropdown for LocalizeJS-enabled pages, such as the Hour of AI.

Warning!!

We have entered Pixel Lock for Hour of AI! All merges to the staging branch from Dec 2 through Dec 12 must go through live change review and be deemed critical for supporting the Hour of AI. External contributions will not be accepted at this time.

For non-critical changes, please change your base to staging-next and delete this warning. We will merge staging-next into staging on Dec 15, 2025.

Testing story

Deployment strategy

Follow-up work

Privacy

Security

Caching

PR Creation Checklist:

• Tests provide adequate coverage
• Privacy impacts have been documented
• Security impacts have been documented
• Code is well-commented
• New features are translatable or updates will not break translations
• Relevant documentation has been added or updated
• User impact is well-understood and desirable
• Follow-up work items (including potential tech debt) are tracked and linked