move `patchConfig` tests from wrangler to workers-utils, also add wrangler-config testing utils to workers-utils/test-helpers

[dario-piotrowicz]

The patchConfig utility is defined in the workers-utils package but is tested in the wrangler package instead. I do believe that the tests should live in the same package implementing the utility so I am moving them here.

Those tests require the writeWranglerConfig, writeDeployRedirectConfig, writeRedirectedWranglerConfig and readWranglerConfig testing utilities so I am moving those under workers-utils/test-helpers.

[!Note] This is the same sort of change as https://github.com/cloudflare/workers-sdk/pull/11539. Besides patchConfig (as far as I can tell) there is only one more instance of a worker-utils utility being tested in wrangler validatePagesConfig I'm happy to also move those tests but I wanted to keep thing simple/separate and just focus on the patchConfig tests in this PR

---

• Tests
  • [x] Tests included/updated
  • [ ] Tests not necessary because:
• Public documentation
  • [ ] Cloudflare docs PR(s):
  • [x] Documentation not necessary because: internal change + workers-utils don't have docs
• Wrangler V3 Backport
  • [ ] Wrangler PR:
  • [x] Not necessary because: workers-utils are not in the v3 branch

A picture of a cute animal (not mandatory, but encouraged)

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: f01b3c68812e8d6023307c286d3db547bb0b9418

The changes in this PR will be included in the next version bump.

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR