### Godot version

4.0.3

### System information

Win7

### Issue description

#if and #else highlighted with the color same as if and else shader statement:

![image](https://github.com/godotengine/godot/assets/28286958/c2d58151-d6d2-4305-b4da-36e76e316caf)


### Steps to reproduce

1. Create shader
2. Add #if and #else

### Minimal reproduction project

N/A
Ref<InputEventMouseButton> mb = ev;
	if (mb.is_valid()) {
		if (mb->get_button_index() == MouseButton::RIGHT && mb->is_pressed()) {
			CodeEdit *tx = shader_editor->get_text_editor();
			Point2i pos = tx->get_line_column_at_pos(mb->get_global_position() - tx->get_global_position());
			int row = pos.y;
			int col = pos.x;
			tx->set_move_caret_on_right_click_enabled(EDITOR_GET("text_editor/behavior/navigation/move_caret_on_right_click"));
			if (tx->is_move_caret_on_right_click_enabled()) {
				tx->remove_secondary_carets();
				if (tx->has_selection()) {
					int from_line = tx->get_selection_from_line();
					int to_line = tx->get_selection_to_line();
					int from_column = tx->get_selection_from_column();
					int to_column = tx->get_selection_to_column();
					if (row < from_line || row > to_line || (row == from_line && col < from_column) || (row == to_line && col > to_column)) {
						
						tx->deselect();
					}
				}
				if (!tx->has_selection()) {
					tx->set_caret_line(row, true, false);
					tx->set_caret_column(col);
				}
			}
			_make_context_menu(tx->has_selection(), get_local_mouse_position());
		}
	}