Only do reshapes in tensordot when needed

[ricardoV94]

This eagerly simplifies the graph in cases where tensordot is just a fancy dot (potentially with transposes)

Closes #1201

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📚 Documentation preview 📚: https://pytensor--1202.org.readthedocs.build/en/1202/

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.31%. Comparing base (65b96c1) to head (d73ee83).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1202      +/-   ##
==========================================
+ Coverage   82.27%   82.31%   +0.04%     
==========================================
  Files         186      186              
  Lines       48018    48018              
  Branches     8634     8635       +1     
==========================================
+ Hits        39505    39525      +20     
+ Misses       6362     6342      -20     
  Partials     2151     2151              

Files with missing lines	Coverage Δ
pytensor/tensor/math.py	92.00% <100.00%> (ø)

... and 2 files with indirect coverage changes