[Autocomplete] PPL table name parser fix

[paulstn]

Description

Every file under .generated can be ignored

There were two changes made.

• The first one was to the PPL grammar file, reverting back a fix to prevent the table name being suggested twice and ultimately preventing any further suggestions from appearing.
• The second change was in the opensearch_ppl_autocomplete.ts file, doing the fix the first change handled by instead intercepting a deeper rule in the grammar, preventing the table from incorrectly being suggested. The code completion engine was hitting the first table rule twice, possibly due to an option where the lexer rule allows for whitespace.

Ultimately, this helps to solve an issue where correctly formatted table names (with backticks, etc.) prevented other suggestions from appearing. The original grammar would've parsed it correctly.

Issues Resolved

Screenshot

Testing the changes

Changelog

• fix: PPL table name parser

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

[joshuali925]

there are some issues with CI right now

[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 60.85%. Comparing base (995d986) to head (6d96663).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8843      +/-   ##
==========================================
- Coverage   60.87%   60.85%   -0.02%     
==========================================
  Files        3799     3799              
  Lines       90762    90783      +21     
  Branches    14292    14294       +2     
==========================================
+ Hits        55247    55249       +2     
- Misses      32005    32025      +20     
+ Partials     3510     3509       -1     

Flag	Coverage Δ
Linux_1	29.04% <ø> (-0.01%)	⬇️
Linux_2	56.39% <ø> (ø)
Linux_3	37.79% <ø> (-0.02%)	⬇️
Linux_4	29.86% <ø> (-0.02%)	⬇️
Windows_1	29.05% <ø> (-0.01%)	⬇️
Windows_2	56.34% <ø> (ø)
Windows_3	37.79% <ø> (-0.02%)	⬇️
Windows_4	29.86% <ø> (-0.02%)	⬇️

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