frontend: run tests in ci in single thread

[thisconnect]

CI sometimes still hangs, trying to run without threads

• Vitest hangs tests, close timed out after 1000ms vitest-dev/vitest#2008
• Timeout abort can leave process(es) running in the background vitest-dev/vitest#3077

In earlier vitest versions the optinon was --no-threads, but this changed to --pool=forks in:

• https://github.com/vitest-dev/vitest/releases/tag/v1.0.0-beta.0
• https://github.com/vitest-dev/vitest/blob/main/docs/guide/migration.md#pools-are-standardized-4172

[thisconnect]

I almost thought it was just me, but now it happened again

• frontend: change support links to redirects #2690
• https://github.com/digitalbitbox/bitbox-wallet-app/actions/runs/8845678474/job/24290059454?pr=2690

[shonsirsha]

LGTM. Thanks for the findings.

I think we could also add this in the vite config instead (if we prefer to have everything vite related 'centralised' in that config file). Anyways, it's fine for me like this.

[thisconnect]

I think we could also add this in the vite config instead (if we prefer to have everything vite related 'centralised' in that config file). Anyways, it's fine for me like this.

Not sure, maybe make webtest locally can use multiple threads or do you prefer if it runs with the same config as in CI?

[shonsirsha]

I think it's good to actually have it the same as in the CI. @thisconnect