LibWeb: Enable EXPLICIT_SYMBOL_EXPORT

Author: https://github.com/ayeteadoe
Commit: 3df8e00d91
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5229
Reviewed-by: https://github.com/ADKaster ✅

Libraries/LibWeb/HTML/HTMLFrameElement.h

@@ -6,12 +6,13 @@
 
 #pragma once
 
+#include <LibWeb/Export.h>
 #include <LibWeb/HTML/NavigableContainer.h>
 
 namespace Web::HTML {
 
 // NOTE: This element is marked as obsolete, but is still listed as required by the specification.
-class HTMLFrameElement final : public NavigableContainer {
+class WEB_API HTMLFrameElement final : public NavigableContainer {
     WEB_PLATFORM_OBJECT(HTMLFrameElement, NavigableContainer);
     GC_DECLARE_ALLOCATOR(HTMLFrameElement);