Add back supports_partial_writes property, returning False

[maxrjones]

Adds back in the supports_partial_writes property for compatibility with newer older versions of Zarr-Python, but also restricts the typing for alignment with the upstream deprecation.

• Closes Failing tests on main with Zarr-Python <3.1.3 due to ManifestStore change #825
• Tests added
• Tests passing
• Full type hint coverage
• Changes are documented in docs/releases.rst
• New functions/methods are listed in api.rst
• New functionality has documentation

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 88.32%. Comparing base (acb0bb6) to head (188a902).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #828      +/-   ##
==========================================
+ Coverage   88.30%   88.32%   +0.01%     
==========================================
  Files          35       35              
  Lines        1975     1978       +3     
==========================================
+ Hits         1744     1747       +3     
  Misses        231      231              

Files with missing lines	Coverage Δ
virtualizarr/manifests/store.py	87.82% <100.00%> (+0.32%)	⬆️

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[maxrjones]

The remaining failures are addressed by #829