### 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.
AnnotationNode *annotation = const_cast<AnnotationNode *>(p_annotation);
	if (annotation->resolved_arguments.is_empty()) {
		return false;
	}
	annotation->export_info.name = annotation->resolved_arguments[0];
	switch (t_usage) {
		case PROPERTY_USAGE_CATEGORY: {
			annotation->export_info.usage = t_usage;
		} break;
		case PROPERTY_USAGE_GROUP: {
			annotation->export_info.usage = t_usage;
			if (annotation->resolved_arguments.size() == 2) {
				annotation->export_info.hint_string = annotation->resolved_arguments[1];
			}
		} break;
		case PROPERTY_USAGE_SUBGROUP: {
			annotation->export_info.usage = t_usage;
			if (annotation->resolved_arguments.size() == 2) {
				annotation->export_info.hint_string = annotation->resolved_arguments[1];
			}
		} break;
	}
	return true;
}
bool GDScriptParser::warning_annotations(const AnnotationNode *p_annotation, Node *p_node) {