[python]Robust URI handling for Ingestion-performance improvement

[johnkerl]

Issue and/or context: [sc-45626]

Changes: Be respectful of creation-URI semantics for multiple object stores. Error introduced on #2434.

Notes for Reviewer: Tested manually using object stores not applicable to this open-source repo -- hence, this repo is not the correct location for unit-test cases of this form

[codecov]

Codecov Report

Merging #2457 (dc0142b) into main (4487347) will decrease coverage by 0.29%.
The diff coverage is 36.36%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2457      +/-   ##
==========================================
- Coverage   90.43%   90.14%   -0.29%     
==========================================
  Files          37       37              
  Lines        3940     3956      +16     
==========================================
+ Hits         3563     3566       +3     
- Misses        377      390      +13     

Flag	Coverage Δ
python	90.14% <36.36%> (-0.29%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
python_api	90.14% <36.36%> (-0.29%)	⬇️
libtiledbsoma	∅ <ø> (∅)

[ryan-williams]

Approving to unblock, but wasn't able to quickly understand where the error messages come from…