### Godot version

4.x

### System information

Windows 10

### Issue description

The `Search Result` panel is not correctly updated when changing the theme.

https://user-images.githubusercontent.com/66004280/208964493-d0423b78-3418-44c9-95ed-822fd34c4720.mp4



### Steps to reproduce

1. Search something
2. Change the theme

### Minimal reproduction project

--
if (!_find_button->is_disabled()) {
		if (_mode == SEARCH_MODE) {
			custom_action("find");
		}
	}
	if (!_replace_button->is_disabled()) {
		if (_mode == REPLACE_MODE) {
			custom_action("replace");
		}
	}
}
void FindInFilesDialog::_on_replace_text_submitted(String text) {
	
	if (!_replace_button->is_disabled()) {
		if (_mode == REPLACE_MODE) {
			custom_action("replace");
		}
	}
}
void FindInFilesDialog::_on_folder_selected(String path) {
	int i = path.find("://");
	if (i != -1) {
		path = path.substr(i + 3);
	}
	_folder_line_edit->set_text(path);
}
void FindInFilesDialog::_bind_methods() {