### Godot version

4.0.2

### System information

Windows 10

### Issue description

EDIT: this was fixed by removing the offending files listed with the MRP and then dragging them back in from my desktop after opening the project~

I was developing my game then suddenly this started happening. I can no longer playtest my game.
I am not 100% sure what caused this but I believe at the time I was making a new inherited scene, saved it, then moved some scenes in the FileSystem tab?

![image](https://user-images.githubusercontent.com/75141902/235264827-62419c7d-963b-4002-9452-a6493a9bfe25.png)


### Steps to reproduce

No idea aaa- x-x

### Minimal reproduction project

Since I have no idea what caused it here's my early project :'D
https://drive.google.com/file/d/14JFZ420AelUNjBIth78msHY29rNjB55_/view?usp=share_link

I was working on these when the error occurred:
- Slot_0.tcsn
- Slot_Clickable.tscn
- Slot_Orphan.tscn
- Slot_Orphan.gd

PreloadNode *preload = alloc_node<PreloadNode>();
	preload->resolved_path = "<missing path>";
	push_multiline(true);
	consume(GDScriptTokenizer::Token::PARENTHESIS_OPEN, R"(Expected "(" after "preload".)");
	make_completion_context(COMPLETION_RESOURCE_PATH, preload);
	push_completion_call(preload);
	preload->path = parse_expression(false);
	if (preload->path == nullptr) {
		push_error(R"(Expected resource path after "(".)");
	}
	pop_completion_call();
	pop_multiline();
	consume(GDScriptTokenizer::Token::PARENTHESIS_CLOSE, R"*(Expected ")" after preload path.)*");
	complete_extents(preload);
	return preload;
}
GDScriptParser::ExpressionNode *GDScriptParser::parse_lambda(ExpressionNode *p_previous_operand, bool p_can_assign) {
	LambdaNode *lambda = alloc_node<LambdaNode>();
	lambda->parent_function = current_function;
	FunctionNode *function = alloc_node<FunctionNode>();
	function->source_lambda = lambda;
	function->is_static = current_function != nullptr ? current_function->is_static : false;
	if (match(GDScriptTokenizer::Token::IDENTIFIER)) {
		function->identifier = parse_identifier();
	}
	bool multiline_context = multiline_stack.back()->get();
	
	push_multiline(false);
	if (multiline_context) {
		tokenizer.push_expression_indented_block();