[Fix] Develop CI fails on web worker template schema tests

[roomote-roomote]

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Related issue

No linked GitHub issue. This follows red develop CI after the hosted worker runtime schema bump in #301.

Why this PR exists

• A maintainer explicitly invited this PR in the linked issue or discussion
• I am a maintainer / this is internal Roomote work

What changed

Web unit tests that assert hosted worker template/snapshot refs and current runtime-schema fixtures now match production derivation (-r3 / schema version 3). Stale -r2 expectations and schema-version 2 fixtures used as “current”/in-flight cases caused false failures after the #301 schema bump.

How it was tested

• Reproduced the CI failure signature locally: 7 failing tests across compute/index.test.ts, setup-new/index.test.ts, and compute-provisioning.test.ts.
• After the fixture updates, re-ran those three files: 71/71 passed.

Checklist

• The PR title follows the repo convention: [Fix], [Feat], [Improve], [Refactor], [Docs], or [Chore] followed by a user-facing description
• This PR is small and scoped to one change
• pnpm lint and pnpm check-types pass locally
• I added tests or included a clear manual validation note above
• I removed secrets, tokens, private keys, and customer data from code, logs, and screenshots
• If this change should appear in the changelog, I ran pnpm changeset

[roomote-roomote]

No code issues found. See task

Test-only fixture alignment. The -r3 template/snapshot expectations and runtimeSchemaVersion: 3 "current" fixtures match production derivation (WORKER_RUNTIME_SCHEMA_VERSION = 3, WORKER_RUNTIME_SCHEMA_TAG = r3), and the deliberately stale/superseded -r2 / version 2 fixtures are correctly left untouched. Re-ran the three files locally: 71/71 passed.

_{Reviewed 5d1487f}