Fix code scanning alert no. 4: Incomplete string escaping or encoding

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

plugins/RemoteControl/webroot/js/jquery-ui.js

@@ -17942,7 +17942,7 @@ $.widget( "ui.tabs", {
 	},
 
 	_sanitizeSelector: function( hash ) {
-		return hash ? hash.replace( /[!"$%&'()*+,.\/:;<=>?@\[\]\^`{|}~]/g, "\\$&" ) : "";
+		return hash ? hash.replace( /[\\!"$%&'()*+,.\/:;<=>?@\[\]\^`{|}~]/g, "\\$&" ) : "";
 	},
 
 	refresh: function() {