languages: Support double quoted keys in YAML highlights (#48063)

Before:
<img width="520" height="74" alt="before"
src="https://github.com/user-attachments/assets/5c010819-a20e-438e-b7f6-218b9f241070"
/>

After:
<img width="532" height="81" alt="after"
src="https://github.com/user-attachments/assets/51528d3b-439f-4fcf-9a7c-b06dec6a7e81"
/>

Release Notes:

- Improved YAML highlights to support quoted keys

Co-authored-by: ozacod <ozacod@users.noreply.github.com>
4dde88cfe5ozacod committed on 1/31/2026, 2:57:04 AM· committed by GitHubparenta6ab1f1
1 file changedLine totals unavailable