fix(python): Ensure read_excel and read_ods support reading from raw bytes for all engines

[alexander-beedie]

Closes #20630.
Closes #20526.

• Fixes a minor calamine engine regression.
• Adds missing bytes ingest support for openpyxl engine.
• Specific test coverage for BytesIO, bytes, and memoryview across all engines.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.04%. Comparing base (247f0b1) to head (78c5e82).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #20636   +/-   ##
=======================================
  Coverage   79.03%   79.04%           
=======================================
  Files        1557     1557           
  Lines      220528   220534    +6     
  Branches     2510     2513    +3     
=======================================
+ Hits       174303   174321   +18     
+ Misses      45651    45639   -12     
  Partials      574      574           

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