LibJS: Generate bytecode for throw statements

Author: https://github.com/gunnarbeutner
Commit: b78f1c1261
Pull-request: https://github.com/SerenityOS/serenity/pull/7952
Reviewed-by: https://github.com/alimpfard

Userland/Libraries/LibJS/AST.h

@@ -1245,6 +1245,7 @@ public:
 
     virtual void dump(int indent) const override;
     virtual Value execute(Interpreter&, GlobalObject&) const override;
+    virtual void generate_bytecode(Bytecode::Generator&) const override;
 
 private:
     NonnullRefPtr<Expression> m_argument;