Add case-insensitive equality operators to grammar

[GabinL21]

Resolves #15639

Microsoft Reviewers: Open in CodeFlow

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 9.37%. Comparing base (108d816) to head (e8adbc6).
Report is 1452 commits behind head on main.

❗ There is a different number of reports uploaded between BASE (108d816) and HEAD (e8adbc6). Click for more details.

HEAD has 4 uploads less than BASE

Flag	BASE (108d816)	HEAD (e8adbc6)
dotnet	4	0

Additional details and impacted files

@@             Coverage Diff             @@
##             main   #15640       +/-   ##
===========================================
- Coverage   94.28%    9.37%   -84.91%     
===========================================
  Files        1113        7     -1106     
  Lines      100791      288   -100503     
  Branches     8734      123     -8611     
===========================================
- Hits        95028       27    -95001     
+ Misses       4595      261     -4334     
+ Partials     1168        0     -1168     

Flag	Coverage Δ
dotnet	?
typescript	9.37% <ø> (+1.66%)	⬆️

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see 1104 files with indirect coverage changes

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[shenglol]

Thanks for the PR!

[github-actions]

Test this change out locally with the following install scripts (Action run 11958091199)

VSCode

• Mac/Linux

  bash <(curl -Ls https://aka.ms/bicep/nightly-vsix.sh) --run-id 11958091199

• Windows

  iex "& { $(irm https://aka.ms/bicep/nightly-vsix.ps1) } -RunId 11958091199"

Azure CLI

• Mac/Linux

  bash <(curl -Ls https://aka.ms/bicep/nightly-cli.sh) --run-id 11958091199

• Windows

  iex "& { $(irm https://aka.ms/bicep/nightly-cli.ps1) } -RunId 11958091199"