#### What type of PR is this?
/area ui
/kind feature
/milestone 2.20.x
#### What this PR does / why we need it:
Added three Node.js scripts to help manage YAML translation files:
1. `find_missing_translations.mjs`: Identifies missing translations by comparing language files with the English base file and generates _missing_translations_*.yaml files.
2. `apply_missing_translations.mjs`: Merges translated entries from missing translation files into the main language files, while preserving untranslated entries for future work.
3. `fix_translations.mjs`: Removes keys that exist in language files but not in the English base file.
Usage Example:
```
# Find missing translations
node scripts/find_missing_translations.mjs
# Apply only the translated entries
node scripts/apply_missing_translations.mjs
# Remove extra keys
node scripts/fix_translations.mjs
```
These scripts streamline the translation workflow and help maintain consistency across language files.
#### Which issue(s) this PR fixes:
None
#### Special notes for your reviewer:
#### Does this PR introduce a user-facing change?
```release-note
None
```
Ryan Wang