LibJS+LibWeb: Add missing JS_DEFINE_ALLOCATOR() for a bunch of classes

Author: https://github.com/awesomekling
Commit: f4fa37afd2
Pull-request: https://github.com/SerenityOS/serenity/pull/22406

Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.cpp

@@ -19,6 +19,8 @@
 
 namespace Web::HTML {
 
+JS_DEFINE_ALLOCATOR(HTMLTextAreaElement);
+
 HTMLTextAreaElement::HTMLTextAreaElement(DOM::Document& document, DOM::QualifiedName qualified_name)
     : HTMLElement(document, move(qualified_name))
 {