Remove restrictive broadcastability check in local_blockwise_alloc

[ricardoV94]

Description

This is very similar in flavor to #742

I'm a bit weary of the fact broadcastability can be redefined by our rewrites, specially after user graph manipulations, because it can mean some graphs may allow broadcasting depending on whether certain rewrites happen or not, and these should be static!

I think the proper solution will come through #408, so that we can both know something has shape 1 and is or is not allowed to broadcast

Related Issue

• Closes #
• Related to #

Checklist

• Checked that the pre-commit linting/style checks pass
• Included tests that prove the fix is effective or that the new feature works
• Added necessary documentation (docstrings and/or example notebooks)
• 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):

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.80%. Comparing base (b79d232) to head (abb646f).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #751      +/-   ##
==========================================
- Coverage   80.80%   80.80%   -0.01%     
==========================================
  Files         162      162              
  Lines       46815    46814       -1     
  Branches    11453    11453              
==========================================
- Hits        37831    37830       -1     
  Misses       6735     6735              
  Partials     2249     2249              

Files	Coverage Δ
pytensor/tensor/rewriting/blockwise.py	94.79% <ø> (-0.06%)	⬇️