[2.x-manual-backport][Discover] Add Footer Bar for Single Line Editor (#8565)

[ananzh]

Backport PR:

#8565

From the original PR:

• initial commit for single line editor footer

• fixing styling and functionality

• Changeset file for PR [Discover] Add Footer Bar for Single Line Editor #8565 created/updated

• fixing bug with error not showing up in footer

• fixing loading state thanks ashwinpc

• trying to surface errors

• adding new error for error state

• Revert "fixing loading state thanks ashwinpc"

This reverts commit 64b5969.

• correctly passing async search strat errors

Changelog

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

[github-actions]

❌ Empty Changelog Section

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[codecov]

Codecov Report

Attention: Patch coverage is 0% with 29 lines in your changes missing coverage. Please review.

Project coverage is 60.93%. Comparing base (50a714f) to head (c267c3f).
Report is 3 commits behind head on 2.x.

Files with missing lines	Patch %	Lines
...ins/data/public/ui/query_editor/editors/shared.tsx	0.00%	21 Missing ⚠️
...ic/application/view_components/utils/use_search.ts	0.00%	5 Missing ⚠️
...query_string/language_service/lib/query_result.tsx	0.00%	2 Missing ⚠️
src/plugins/data/common/utils/helpers.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              2.x    #8691      +/-   ##
==========================================
- Coverage   60.95%   60.93%   -0.02%     
==========================================
  Files        3792     3792              
  Lines       90464    90488      +24     
  Branches    14197    14202       +5     
==========================================
+ Hits        55140    55142       +2     
- Misses      31838    31861      +23     
+ Partials     3486     3485       -1     

Flag	Coverage Δ
Linux_1	29.08% <0.00%> (-0.02%)	⬇️
Linux_2	56.53% <0.00%> (ø)
Linux_3	37.69% <0.00%> (-0.02%)	⬇️
Linux_4	29.96% <0.00%> (-0.02%)	⬇️
Windows_1	29.10% <0.00%> (-0.02%)	⬇️
Windows_2	56.49% <0.00%> (ø)
Windows_3	37.69% <0.00%> (-0.02%)	⬇️
Windows_4	29.96% <0.00%> (-0.02%)	⬇️

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[virajsanghvi]

There is a snapshot test failure... Is this expected, @sejli?