LibJS+LibWeb: Make CyclicModule.h not include AST.h

This led to some fallout as many things in LibJS and LibWeb were pulling
in other things via CyclicModule.h

Userland/Libraries/LibJS/Forward.h

@@ -179,6 +179,7 @@ struct ImportEntry;
 class ImportStatement;
 class Interpreter;
 class Intrinsics;
+class MetaProperty;
 class Module;
 class NativeFunction;
 class ObjectEnvironment;