devenv-run-tests: switch directories in between tests

[sandydoo]

No description provided.

[cloudflare-workers-and-pages]

Deploying devenv with    Cloudflare Pages

Latest commit:	5fbd554
Status:	✅  Deploy successful!
Preview URL:	https://37acaaef.devenv.pages.dev
Branch Preview URL:	https://fix-wasm-test.devenv.pages.dev

View logs

[sandydoo]

I've figured out what's going on with this test. git-hooks installs the hooks in the git root dir, so the test/example hooks end up running against the whole devenv repo.
Either we add some tweakable option to git-hooks, or we could cp the whole directory with the test/example to tmp, run git init, and do our stuff without worry.

[domenkozar]

Maybe we just need to git init?

[sandydoo]

Maybe we just need to git init?

Yes, but it would be best to do so in a temporary directory.

[sandydoo]

This doesn't fully fix the wasm test, but it's a good cleanup to merge.