EnC - Allow parameter renames

[davidwengier]

An extension to #48635, it should be possible to allow renaming of parameters in more cases. The symbol matcher will need to be updated to not check parameter names, but since the PDB info is already looked up by most recent edit first, the debugger should be fine with the change.

The symbol matcher change could also mean allowing explicitly implemented records members to not need to be so strict about parameter names.

This issue is linked in code.