### Godot version

4.2 f5696c3

### System information

Windows 10 x64

### Issue description

![image](https://github.com/godotengine/godot/assets/2223172/7ad0e3b6-9599-4f7b-a07c-da54779e647a)


### Steps to reproduce

1. Add node
2. Attach a built-in script
3. Add child node
4. Add script to the child node
5. In some method write `get_parent().bui`

### Minimal reproduction project

N/A
last_assign_line = local.constant->initializer->end_line;
					last_assigned_expression = local.constant->initializer;
				}
				break;
			case GDScriptParser::SuiteNode::Local::PARAMETER:
				if (local.parameter->initializer) {
					last_assign_line = local.parameter->initializer->end_line;
					last_assigned_expression = local.parameter->initializer;
				}
				is_function_parameter = true;
				break;
			default:
				break;
		}
	}
	while (suite) {
		for (int i = 0; i < suite->statements.size(); i++) {
			if (suite->statements[i]->end_line >= p_context.current_line) {
				break;
			}
			switch (suite->statements[i]->type) {
				case GDScriptParser::Node::ASSIGNMENT: {
					const GDScriptParser::AssignmentNode *assign = static_cast<const GDScriptParser::AssignmentNode *>(suite->statements[i]);
					if (assign->end_line > last_assign_line && assign->assignee && assign->assigned_value && assign->assignee->type == GDScriptParser::Node::IDENTIFIER) {
						const GDScriptParser::IdentifierNode *id = static_cast<const GDScriptParser::IdentifierNode *>(assign->assignee);
						if (id->name == p_identifier->name && id->source == p_identifier->source) {
							last_assign_line = assign->assigned_value->end_line;
							last_assigned_expression = assign->assigned_value;
						}
					}