Using fully qualified names wherever possible avoids ambiguous class and function names. This is a follow-up to D82371.
I'm wondering how hard it would be to have a linter check for TableGen files that reports whether there are lines longer than 80 characters. This could be useful for such situations: I had to change some locations in OpBase.td that went unnoticed during earlier reviews (e.g. the constBuilderCall for I32EnumAttr).