fix: stabilize t in app directory

[jessemartin]

What is the purpose of this pull request? (put an "X" next to item)

[ ] Documentation update
[x] Bug fix
[ ] New feature
[ ] Other, please explain:

What changes did you make? (Give an overview)
stabilized t in app directory

Which issue (if any) does this pull request address?
#1205

Is there anything you'd like reviewers to focus on?

[jessemartin]

@aralroca mind taking a look?

[aralroca]

This PR remember me this other PR: #574 that was reverted here because introduce this issue #604

can you verify that now shared layouts work with your change?

[jessemartin]

This PR does not change the behavior of the hook in the Pages router, so no regression is present there. I tested out shared layouts in the App router via the with-app-directory and it seems to be working as intended!

demo.mov

[jessemartin]

@aralroca could you please have another look at this?

[aralroca]

Thanks for the contribution

[aralroca]

@jessemartin I have updated the canary branch because in master there were changes that were not in the canary, and just failed the test "t is stable", could you check what happened? Thanks and sorry for the inconvenience

[jessemartin]

@aralroca looks like the problem was a merge conflict (the upstream logic had moved to createTranslation.tsx). I force-pushed a rebase and fix to this branch.

[aralroca]

Thanks a lot @jessemartin 😊

[aralroca]

@all-contributors please add @jessemartin for code

[allcontributors]

@aralroca

I've put up a pull request to add @jessemartin! 🎉