### 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.
}
			}
			elements[item.identifier->name] = item.line;
			if (match(GDScriptTokenizer::Token::EQUAL)) {
				ExpressionNode *value = parse_expression(false);
				if (value == nullptr) {
					push_error(R"(Expected expression value after "=".)");
				}
				item.custom_value = value;
			}
			item.index = enum_node->values.size();
			enum_node->values.push_back(item);
			if (!named) {
				
				current_class->add_member(item);
			}
		}
	} while (match(GDScriptTokenizer::Token::COMMA));
	pop_multiline();
	consume(GDScriptTokenizer::Token::BRACE_CLOSE, R"(Expected closing "}" for enum.)");
#ifdef TOOLS_ENABLED
	
	for (int i = 0; i < enum_node->values.size(); i++) {
		if (i == enum_node->values.size() - 1) {
			
			if (enum_node->values[i].line != previous.start_line && has_comment(enum_node->values[i].line)) {
				if (named) {
					enum_node->values.write[i].doc_description = get_doc_comment(enum_node->values[i].line, true);
				} else {
					current_class->set_enum_value_doc(enum_node->values[i].identifier->name, get_doc_comment(enum_node->values[i].line, true));