reflect: return correct name for unsafe.Pointer type

For some reason, the type kind name is "unsafe.Pointer" while the
.Name() method just returns "Pointer".

Not sure why this difference exists, but to be able to test .Name() in
testdata/reflect.go it needs to match.

testdata/reflect.go

@@ -423,6 +423,9 @@ func showValue(rv reflect.Value, indent string) {
 	if !rt.Comparable() {
 		print(" comparable=false")
 	}
+	if name := rt.Name(); name != "" {
+		print(" name=", name)
+	}
 	println()
 	switch rt.Kind() {
 	case reflect.Bool: