[Bug] 2022-03 decorators doesn't support inheritance with @computed

[jzhan-canva]

Intended outcome:

test(`inheritance should work with computed`, () => {
    class Store {
        @computed
        get getNumber() {
            return 1
        }
    }

    class SubStore extends Store {
        @computed
        override get getNumber() {
            return super.getNumber + 1
        }
    }

    const store = new SubStore()
    expect(store.getNumber).toBe(2)
})

Actual outcome:

[MobX] Cycle detected in computation [email protected]: get getNumber() {
                        return super.getNumber + 1;
                    }

How to reproduce the issue:

As per unit test. Can see the error in stackblitz link

Versions

^6.12.3

[jzhan-canva]

A potential fix, not sure if this will break anything. PR passes all tests