Allow specializing shape of predefined tensor types

[ricardoV94]

The following is now allowed

import pytensor.tensor as pt

pt.dmatrix(shape=(3, 4))

Whereas before only the generic matrix function allowed it. The reason we didn't make dmatrix and alike just helper functions like matrix was that they are used to parametrize itypes/otypes of Ops without make_node, and they need to be PyTensor types for that.

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📚 Documentation preview 📚: https://pytensor--1355.org.readthedocs.build/en/1355/

[jessegrabowski]

Great PR, long overdue

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 82.04%. Comparing base (3c66aa6) to head (800a9bf).
Report is 4 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1355   +/-   ##
=======================================
  Coverage   82.04%   82.04%           
=======================================
  Files         203      203           
  Lines       48837    48844    +7     
  Branches     8689     8691    +2     
=======================================
+ Hits        40067    40074    +7     
  Misses       6619     6619           
  Partials     2151     2151           

Files with missing lines	Coverage Δ
pytensor/tensor/type.py	94.61% <100.00%> (+0.08%)	⬆️

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