Determine if nested `AlignRotations` patterns are still necessary

[j2kun]

While debugging https://github.com/google/heir/issues/578, it seemed to me that the buggy pattern AlignRotations_RightAssociated_Inner_#InnerOp#_Outer_#OuterOp (and its related LeftAssociated version) are not doing anything. It seems like they are no-ops, but we might want to determine if they are still providing any value, and remove them if not.

[github-actions[bot]]

This issue has 1 outstanding TODOs:

• lib/Dialect/TensorExt/Transforms/InsertRotate.td:92: determine if these patterns are still necessary after the

This comment was autogenerated by todo-backlinks