Pinia is not injected before vue-router beforeEach

[BenShelton]

Reproduction

https://stackblitz.com/edit/github-ddb6tb?file=src/main.ts

Steps to reproduce the bug

1. Install Pinia & Vue Router
2. Add a beforeEach on the router instance that uses a store
3. Check console on startup

Expected behavior

No warnings appear

Actual behavior

Warning about injection symbol appears. See screenshot (the toRefs warning appears unrelated):

Additional information

This is a minimal example of what we have already had running for a long time in production. Since upgrading to Vue 2.7 this warning has started to appear with no other code changes.

Workaround is adding an await nextTick() in the start of the router guard which makes the error disappear.

[posva]

Duplicate of vuejs/vue#12636