Fix error in dataset_to_point_list when chain, draw are not the leading dims

[OriolAbril]

Description

Split the dict comprehension in two to keep transposing and reshaping coherent.
Otherwise, the sizes used in the reshaping are taken from the object before transposing
and the function doesn't work whenever the transposing is actually needed.

Related Issue

• Closes dataset_to_point_list fails when chain, draw are not the leading dims #7178

Checklist

• Checked that the pre-commit linting/style checks pass
• Included tests that prove the fix is effective or that the new feature works
• If you are a pro: each commit corresponds to a relevant logical change

Type of change

• New feature / enhancement
• Bug fix
• Documentation
• Maintenance
• Other (please specify):

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📚 Documentation preview 📚: https://pymc--7180.org.readthedocs.build/en/7180/

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.24%. Comparing base (6c6fd13) to head (d3e0908).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7180   +/-   ##
=======================================
  Coverage   92.24%   92.24%           
=======================================
  Files         100      100           
  Lines       16887    16888    +1     
=======================================
+ Hits        15577    15578    +1     
  Misses       1310     1310           

Files	Coverage Δ
pymc/util.py	80.93% <100.00%> (+0.08%)	⬆️

[ricardoV94]

mypy is unhappy

[OriolAbril]

I could only find 9ne failed test which seems unrelated (checking from my phone)

[ricardoV94]

I could only find 9ne failed test which seems unrelated (checking from my phone)

Rerunning