LibWeb: Amend DomParser to make it compatible with TrustedTypes

Author: https://github.com/tete17
Commit: c591f8c14f
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/6057
Reviewed-by: https://github.com/AtkinsSJ
Reviewed-by: https://github.com/Lubrsi ✅

Libraries/LibWeb/HTML/DOMParser.idl

@@ -13,5 +13,5 @@ enum DOMParserSupportedType {
 interface DOMParser {
     constructor();
 
-    Document parseFromString(DOMString string, DOMParserSupportedType type);
+    Document parseFromString(Utf16DOMString string, DOMParserSupportedType type);
 };