### Godot version

4.0beta14

### System information

Windows 10

### Issue description

Returned Array value isn't converted to Packed*Array

### Steps to reproduce

```
var string_array: PackedStringArray = ["test"] # valid
var int_array: PackedInt32Array = [3] # valid

func get_packed_string_array() -> PackedStringArray:
	return ["test"] #error


func get_packed_int_array() -> PackedInt32Array:
	return [3] #error
```

Line 8:Cannot return value of type "Array" because the function return type is "PackedStringArray".
Line 12:Cannot return value of type "Array" because the function return type is "PackedInt32Array".

### Minimal reproduction project

[return_bug.zip](https://github.com/godotengine/godot/files/10490367/return_bug.zip)

Error err = resolve_class_inheritance(look_class, p_class);
							if (err) {
								return err;
							}
						}
						base = look_class->get_datatype();
						found = true;
						break;
					}
					if (look_class->has_member(name)) {
						resolve_class_member(look_class, name, p_class);
						base = look_class->get_member(name).get_datatype();
						found = true;
						break;
					}
				}
				if (!found) {
					push_error(vformat(R"(Could not find base class "%s".)", name), p_class);
					return ERR_PARSE_ERROR;
				}
			}
		}
		for (int index = extends_index; index < p_class->extends.size(); index++) {
			if (base.kind != GDScriptParser::DataType::CLASS) {
				push_error(R"(Super type "%s" is not a GDScript. Cannot get nested types.)", p_class);
				return ERR_PARSE_ERROR;
			}
			
			GDScriptParser::IdentifierNode *id = parser->alloc_node<GDScriptParser::IdentifierNode>();
			id->name = p_class->extends[index];