Update kerchunk writer refs_to_dataframe to deal with ArrowStringArray from new ZarrParser deps.

[norlandrhagen]

What I did

#892 added two new deps, arro3-core and pyarrow These broke the Kerchunk parquet tests:

ValueError: Error converting column "path" to bytes using encoding UTF8. Original error: Unable to avoid copy while creating an array as requested.

Adding a pandas context seemed to resolve this. pd.option_context("future.infer_string", False)

Acceptance criteria:

• Tests passing
• Full type hint coverage

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.34%. Comparing base (3287d82) to head (98a612c).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #907      +/-   ##
==========================================
- Coverage   89.38%   89.34%   -0.04%     
==========================================
  Files          34       34              
  Lines        1997     1999       +2     
==========================================
+ Hits         1785     1786       +1     
- Misses        212      213       +1     

Files with missing lines	Coverage Δ
virtualizarr/accessor.py	95.69% <100.00%> (+0.09%)	⬆️

... and 1 file with indirect coverage changes

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[TomNicholas]

Nice catch!!