fix: Improve read_database check for SQLAlchemy async Session objects

[alexander-beedie]

Closes #16616.

[stinodego]

Good move extracting into a helper function.

It still feels a bit brittle checking for the names of certain types. Perhaps this can be rewritten in the future with a dynamic import of SQLAlchemy and doing proper isinstance checks?

[alexander-beedie]

Perhaps this can be rewritten in the future with a dynamic import of SQLAlchemy and doing proper isinstance checks?

Actually, that's a good move; let's do it now ;)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.48%. Comparing base (b0845e3) to head (ce51c5e).
Report is 19 commits behind head on main.

❗ Current head ce51c5e differs from pull request most recent head efb188d

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Additional details and impacted files

@@            Coverage Diff             @@
##             main   #16680      +/-   ##
==========================================
- Coverage   81.52%   81.48%   -0.04%     
==========================================
  Files        1414     1415       +1     
  Lines      186398   186656     +258     
  Branches     3014     3016       +2     
==========================================
+ Hits       151957   152102     +145     
- Misses      33911    34024     +113     
  Partials      530      530              

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