feat: Pass endpoint_url loaded from CredentialProviderAWS to scan/write_delta

[nameexhaustion]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 81.41%. Comparing base (e303732) to head (3419552).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
.../polars/io/cloud/credential_provider/_providers.py	50.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #23812      +/-   ##
==========================================
+ Coverage   81.39%   81.41%   +0.02%     
==========================================
  Files        1653     1653              
  Lines      224503   224495       -8     
  Branches     2873     2874       +1     
==========================================
+ Hits       182731   182771      +40     
+ Misses      41058    41009      -49     
- Partials      714      715       +1     

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