use django's cl.get_request as is to avoid poor performance

[EricOuma]

Resolves # (issue)

Proposed changes

Typesense has a maximum pagination size of 250. This interferes with admin actions that have more than 250 items selected

Types of changes

What types of changes does your code introduce to DjangoTypesense?
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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (if none of the other choices apply)

Checklist

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• I have read the CONTRIBUTING doc
• Lint and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• I have added necessary documentation (if appropriate)
• Any dependent changes have been merged and published in downstream modules

[codecov-commenter]

Codecov Report

Attention: 6 lines in your changes are missing coverage. Please review.

Comparison is base (d458743) 78.91% compared to head (d0dad17) 78.64%.

Files	Patch %	Lines
django_typesense/admin.py	0.00%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #73      +/-   ##
==========================================
- Coverage   78.91%   78.64%   -0.28%     
==========================================
  Files          12       12              
  Lines         574      576       +2     
==========================================
  Hits          453      453              
- Misses        121      123       +2     

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