### 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.
}
					}
					break;
				case DictionaryNode::PYTHON_DICT:
					if (!match(GDScriptTokenizer::Token::COLON)) {
						if (match(GDScriptTokenizer::Token::EQUAL)) {
							push_error(R"(Expected ":" after dictionary key. Mixing dictionary styles is not allowed.)");
							advance(); 
						} else {
							push_error(R"(Expected ":" after dictionary key.)");
						}
					}
					break;
			}
			
			ExpressionNode *value = parse_expression(false);
			if (value == nullptr) {
				push_error(R"(Expected expression as dictionary value.)");
			}
			if (key != nullptr && value != nullptr) {
				dictionary->elements.push_back({ key, value });
			}
		} while (match(GDScriptTokenizer::Token::COMMA) && !is_at_end());
	}
	pop_multiline();
	consume(GDScriptTokenizer::Token::BRACE_CLOSE, R"(Expected closing "}" after dictionary elements.)");
	complete_extents(dictionary);
	return dictionary;
}
GDScriptParser::ExpressionNode *GDScriptParser::parse_grouping(ExpressionNode *p_previous_operand, bool p_can_assign) {