fix(CI): Remove e2e test timeout overrides from rspack & turbopack suites (#78934)
**The default timeout is 1 minute.** This PR reduces the timeouts for these tests from 4 minutes to 1 minute.
Maybe these overrides made sense at some point, but turbopack shouldn't ever be significantly slower than webpack in any test (if it is, that's a bug), so we shouldn't need larger timeouts for these.
This long 4 minute timeout has contributed to github action job timeouts we've previously experienced for the arewerspack/areweturboyet nightly jobs, so IMO it's hurting more than it's helping.
areweturboyet development tests: https://github.com/vercel/next.js/actions/runs/14893493964
areweturboyet production tests: https://github.com/vercel/next.js/actions/runs/14893499248