### Godot version

v4.0.beta13.official [caacade56]

### System information

Windows 8.1

### Issue description

The `Unreachable code (statement after return) in function 'function_name()'` warning is given for functions that do not have unreachable code. The same code does not give this warning in v3.5.stable.official [991bb6ac7].

### Steps to reproduce

```
func warning(i: int) -> void:
  if i == 0:
    pass
  elif i == 1:
    return
  else:
    return
  print("yeah")
```

Removing either the `elif` or the `else` removes the warning.

### Minimal reproduction project

N/A; code in reproduction steps can be placed in any blank gdscript file to trigger the error.
}
	parse_class_body(true);
	complete_extents(head);
#ifdef TOOLS_ENABLED
	for (const KeyValue<int, GDScriptTokenizer::CommentData> &E : tokenizer.get_comments()) {
		if (E.value.new_line && E.value.comment.begins_with("##")) {
			class_doc_line = MIN(class_doc_line, E.key);
		}
	}
	if (has_comment(class_doc_line)) {
		get_class_doc_comment(class_doc_line, head->doc_brief_description, head->doc_description, head->doc_tutorials, false);
	}
#endif 
	if (!check(GDScriptTokenizer::Token::TK_EOF)) {
		push_error("Expected end of file.");
	}
	clear_unused_annotations();
}
GDScriptParser::ClassNode *GDScriptParser::find_class(const String &p_qualified_name) const {
	String first = p_qualified_name.get_slice("::", 0);
	Vector<String> class_names;
	GDScriptParser::ClassNode *result = nullptr;
	
	if (first.is_empty() || (head->identifier && first == head->identifier->name)) {
		class_names = p_qualified_name.split("::");
		result = head;
	} else if (p_qualified_name.begins_with(script_path)) {
		
		class_names = p_qualified_name.trim_prefix(script_path).split("::");
		result = head;