Make logprob inference for binary ops independent of order of inputs

[shreyas3156]

What is this PR about?
This PR makes the logprob derivation of binary comparison ops (<=, >=, <, >) independent of the order of the inputs. e.g. pt.le(x, 0.4) and pt.le(0.4, x) would have the same logp.

Addresses #6633.

Checklist

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📚 Documentation preview 📚: https://pymc--6682.org.readthedocs.build/en/6682/

[codecov]

Codecov Report

Merging #6682 (3009cde) into main (9b712bf) will decrease coverage by 0.02%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6682      +/-   ##
==========================================
- Coverage   92.01%   91.99%   -0.02%     
==========================================
  Files          95       95              
  Lines       16000    16016      +16     
==========================================
+ Hits        14722    14734      +12     
- Misses       1278     1282       +4     

Impacted Files	Coverage Δ
pymc/logprob/binary.py	96.96% <100.00%> (-1.04%)	⬇️

... and 1 file with indirect coverage changes

[shreyas3156]

@ricardoV94 Once this is merged, I can create a PR for the not-operation logprob inference.