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/WebDriver/HeapTimer.h

@@ -10,10 +10,11 @@
 #include <LibGC/Function.h>
 #include <LibGC/Ptr.h>
 #include <LibJS/Heap/Cell.h>
+#include <LibWeb/Export.h>
 
 namespace Web::WebDriver {
 
-class HeapTimer : public JS::Cell {
+class WEB_API HeapTimer : public JS::Cell {
     GC_CELL(HeapTimer, JS::Cell);
     GC_DECLARE_ALLOCATOR(HeapTimer);