Provide prev parameter to reactiveComputed callback

[RomanSkrypnik]

Clear and concise description of the problem

Currently, every time reactiveComputed dependencies get updated - reactiveComputed resets to initial state
Example:

const test = ref(0);

const obj = reactiveComputed(() => ({ test: test.value, num: 2 })); // { test: 0, num: 2 }

obj.num = 5;
console.log(obj) { test: 0, num: 5 }

test.value = 1;
console.log(obj); // { test: 1, num: 2 } - **num** has been reset

Suggested solution

It would be a great solution to add prev param to reactiveComputed callback:

const test = ref(0);

const obj = reactiveComputed(
  (prev) => ({ test: test.value, num: prev.num ?? 2 })  // { test: 0, num: 2 }
);

obj.num = 5;
console.log(obj); { test: 0, num: 5 }

test.value = 1;
console.log(obj); // { test: 1, num: 5 }

Alternative

No response

Additional context

No response

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