test: add generics test

Author: tdakkota

testdata/generic_name.go

@@ -0,0 +1,7 @@
+package testdata
+
+func _[TеstGeneric any]() { // want `identifier "TеstGeneric" contain non-ASCII character: U\+0435 'е'`
+}
+
+type _[TеstGeneric any] struct { // want `identifier "TеstGeneric" contain non-ASCII character: U\+0435 'е'`
+}