[Backport 2.x] Add data summary panel in discover

[opensearch-trigger-bot]

Backport 8d52134 from #8186.

[github-actions]

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[codecov]

Codecov Report

Attention: Patch coverage is 87.85714% with 17 lines in your changes missing coverage. Please review.

Project coverage is 64.17%. Comparing base (9807a2c) to head (a8df44c).

Files with missing lines	Patch %	Lines
src/plugins/data/public/search/search_service.ts	15.38%	11 Missing ⚠️
...c/query_assist/components/query_assist_summary.tsx	96.73%	1 Missing and 2 partials ⚠️
...nts/public/query_assist/utils/create_extension.tsx	85.71%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              2.x    #8264      +/-   ##
==========================================
+ Coverage   64.14%   64.17%   +0.03%     
==========================================
  Files        3740     3743       +3     
  Lines       88668    88805     +137     
  Branches    13803    13825      +22     
==========================================
+ Hits        56873    56994     +121     
- Misses      31184    31198      +14     
- Partials      611      613       +2     

Flag	Coverage Δ
Linux_1	30.04% <0.00%> (-0.01%)	⬇️
Linux_2	58.97% <ø> (ø)
Linux_3	40.37% <15.38%> (-0.01%)	⬇️
Linux_4	31.69% <86.42%> (+0.13%)	⬆️
Windows_1	30.06% <0.00%> (-0.01%)	⬇️
Windows_2	58.92% <ø> (ø)
Windows_3	40.37% <15.38%> (-0.01%)	⬇️
Windows_4	31.69% <86.42%> (+0.13%)	⬆️

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