Remove Stage name check on aggregate pipelines

[BRETT71]

New Pull Request Checklist

• I am not disclosing a vulnerability.
• I am creating this PR in reference to an issue.

Issue Description

Add search to the array of PIPELINE_KEYS in AggregateRouter.js. This allows the use of Atlas Search Index Click Here for information on atlas search

Approach

TODOs before merging

• Add test cases
• Add entry to changelog
• Add changes to documentation (guides, repository pages, in-code descriptions)
• Add security check
• Add new Parse Error codes to Parse JS SDK
• ...

[codecov]

Codecov Report

Merging #7237 (c446d42) into master (d789ca6) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #7237      +/-   ##
==========================================
- Coverage   94.04%   94.03%   -0.02%     
==========================================
  Files         172      172              
  Lines       12960    12955       -5     
==========================================
- Hits        12188    12182       -6     
- Misses        772      773       +1     

Impacted Files	Coverage Δ
src/Routers/AggregateRouter.js	100.00% <ø> (ø)
src/RestWrite.js	93.84% <0.00%> (-0.17%)	⬇️

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[mtrezza]

Thanks for opening this PR.

Would you please

• open an issue and reference the issue here, as indicated in the PR template
• add a test case to this PR

[BRETT71]

#7238

[dplewis]

@BRETT71 Check the CI there is a test case that has to be removed.

[dplewis]

Can you update the change log? And the title of this PR?

[parseplatformorg]

🎉 This change has been released in version 5.0.0-beta.1

[parseplatformorg]

🎉 This change has been released in version 5.0.0