First deploy after void secret put fails with Cloudflare 100405 (exports differ) on a Durable Object Worker #460

On a Worker with Durable Objects, the first void deploy --platform cloudflare after void secret put fails when Void stages the new version at 0% beside the secret-changed one:

■ deploy: Cloudflare could not stage the uploaded Worker Version at zero-percent traffic (exit 1); production traffic is unchanged. Cloudflare error code: 100405.
  │ [100405] All versions in a multi-version deployment must declare identical `exports`. Deploy the version that changes `exports` at 100% first, then split traffic.

Repro (unmodified void 1.1.11; a fresh Worker each time; ~670 KB, so the 1 MiB read-back in #459 is not involved):

1. void deploy a new Worker with two SQLite Durable Object classes (defineDurableObject), routes, two defineScheduled crons, preview_urls: false and a version_metadata binding: succeeds.
2. void secret put JEV_API_KEY (declared optional in env.ts): succeeds.
3. void deploy with no code change: fails as above, and so does every retry.

The same code was rebuilt between steps 1 and 3, so the exports shouldn't differ; it looks like the version created by the secret change declares different exports from a version Void uploads. An older Worker of ours did deploy after secret changes, so it may depend on something about a fresh Worker's first versions, but we haven't narrowed that down.

Found while looking into #459. void 1.1.11, cf CLI bundled with it, Node 24.18, macOS.