Upgrade WebKit (#2643)

* Missing export

* Regenerate builtins

* Fix crash in require()

* Various breaking JSC changes

* hopefully speed up C++ compilation a little

* Skip failing test fo rnow

* Update WebKit

* Add a comment

* Fix error in postinstall

* Update WebKit

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Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

src/bun.js/bindings/JSStringDecoder.cpp

@@ -8,6 +8,7 @@
 #include "headers.h"
 #include "JSDOMConvertEnumeration.h"
 #include "JavaScriptCore/JSArrayBufferView.h"
+#include "BunClientData.h"
 
 namespace WebCore {