Remove useless complex conjugate Ops from graphs

[brandonwillard]

This PR adds some simple checks and rewrites that avoid adding useless complex conjugate Ops to graphs.

[codecov]

Codecov Report

Attention: Patch coverage is 96.87500% with 1 line in your changes missing coverage. Please review.

Project coverage is 79.26%. Comparing base (ecd6b49) to head (199b4eb).
Report is 526 commits behind head on main.

Files	Patch %	Lines
aesara/sparse/type.py	80.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1025      +/-   ##
==========================================
+ Coverage   79.23%   79.26%   +0.02%     
==========================================
  Files         152      152              
  Lines       47953    47978      +25     
  Branches    10919    10922       +3     
==========================================
+ Hits        37995    38028      +33     
+ Misses       7449     7442       -7     
+ Partials     2509     2508       -1     

Files	Coverage Δ
aesara/sparse/basic.py	82.89% <100.00%> (+0.42%)	⬆️
aesara/tensor/math.py	89.78% <100.00%> (+0.05%)	⬆️
aesara/tensor/math_opt.py	87.27% <100.00%> (+0.05%)	⬆️
aesara/sparse/type.py	74.76% <80.00%> (+2.65%)	⬆️