Watchers depending on current route re-evaluated after unmount

[Akryum]

Version

2.7.8

Reproduction link

codesandbox.io

Steps to reproduce

Have a watcher with a dependency on the current route. Unmount the component.

What is expected?

No watcher effect is called

What is actually happening?

Watcher effects are called

---

Looks like it's the same issue as https://github.com/vuejs/core/issues/2291 for Vue 3