LibJS: Prepare yield object before re-routing it through finally

Author: https://github.com/Hendiadyoin1
Commit: 1de475b404
Pull-request: https://github.com/SerenityOS/serenity/pull/24362
Issue: https://github.com/SerenityOS/serenity/issues/24356

Userland/Libraries/LibJS/Bytecode/Interpreter.h

@@ -59,6 +59,7 @@ public:
     [[nodiscard]] Value get(Operand) const;
     void set(Operand, Value);
 
+    Value do_yield(Value value, Optional<Label> continuation);
     void do_return(Value value)
     {
         reg(Register::return_value()) = value;