GDScript: Use getter return type for the property type

The PropertyInfo hints are more relevant for the inspector. The getter
return type is more reliable and less likely to be incorrect and it is
what's going to be called in the end.

modules/gdscript/gdscript_analyzer.cpp

@@ -2608,10 +2608,13 @@ void GDScriptAnalyzer::reduce_identifier_from_base(GDScriptParser::IdentifierNod
 	const StringName &native = base.native_type;
 
 	if (class_exists(native)) {
-		PropertyInfo prop_info;
 		MethodInfo method_info;
-		if (ClassDB::get_property_info(native, name, &prop_info)) {
-			p_identifier->set_datatype(type_from_property(prop_info));
+		if (ClassDB::has_property(native, name)) {
+			StringName getter_name = ClassDB::get_property_getter(native, name);
+			MethodBind *getter = ClassDB::get_method(native, getter_name);
+			if (getter != nullptr) {
+				p_identifier->set_datatype(type_from_property(getter->get_return_info()));
+			}
 			return;
 		}
 		if (ClassDB::get_method_info(native, name, &method_info)) {