TESTID-140: add queryEditorLanguageOptions data-test-subj on language_selector.tsx

[silva-qa]

Description

• Adds queryEditorLanguageOptions data-test-subj on src/plugins/data/public/ui/query_editor/language_selector.tsx

Issues Resolved

• Adds support for some tests that will be merged to main in the future, from the cypress-unification branch.

Screenshot

Testing the changes

Changelog

• skip

Check List

• All tests pass
  • yarn test:jest
  • yarn test:jest_integration
• New functionality includes testing.
• New functionality has been documented.
• Update CHANGELOG.md
• Commits are signed per the DCO using --signoff

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.86%. Comparing base (6a0484a) to head (16201f2).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #9029   +/-   ##
=======================================
  Coverage   60.86%   60.86%           
=======================================
  Files        3808     3808           
  Lines       91209    91209           
  Branches    14410    14410           
=======================================
  Hits        55516    55516           
  Misses      32153    32153           
  Partials     3540     3540           

Flag	Coverage Δ
Linux_1	29.02% <ø> (ø)
Linux_2	56.38% <ø> (ø)
Linux_3	37.93% <ø> (ø)
Linux_4	29.01% <ø> (ø)
Windows_1	29.03% <ø> (ø)
Windows_2	56.34% <ø> (ø)
Windows_3	37.93% <ø> (ø)
Windows_4	29.01% <ø> (ø)

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