Fix search option label names to match settings and search UI

[huseynovvusal]

Summary

This PR fixes a UI inconsistency between:

• /settings/ (Default search options in contributor settings)
• /search/ (Search page checkbox filters)

Before:

• settings: Match case, Match whole word, Search in string identifiers
• search: Case sensitive, Entire words, Search in string identifiers (mixed naming)

After:

• both sides now use the same labels:
  • Match case
  • Match whole word
  • Search in string identifiers
  • Include rejected translations
  • Exclude source strings

Files changed

• constants.ts
• search.html

Why

• Prevents UX confusion when users switch between settings and search controls
• Improves internationalization / localization key consistency
• Avoids subtle test breakage from label mismatch

Testing

1. docker compose up -d --build
2. cd translate && npm run start
3. Open:
   • http://localhost:8000/settings/
   • http://localhost:8000/search/
4. Verify labels are consistent.
5. Run tests:
   • npm run test --workspace=translate -- --run src/modules/search/components/SearchPanel.test.jsx

Closes #4029

[mathjazz]

Thanks for the patch!

Sadly the layout breaks into two lines:

Please adjust it accordingly. Somethink like this would work:

/* search.css | http://localhost:8000/static/css/search.css */

& .check-box {
  & .check-box-wrapper {
    /* margin-left: 20px; */
    margin-left: 15px;
  }
}

#main {
  & .container {
    & menu {
      & .search-options {
        & .check-list {
          width: 490px;
          text-align: right;
        }
      }
    }
  }
}