Cannot upload Cloudflare worker.js sourcemaps when using OpenNext

### Is there an existing issue for this?

- [x] I have checked for existing issues https://github.com/getsentry/sentry-javascript/issues
- [x] I have reviewed the documentation https://docs.sentry.io/
- [x] I am using the latest SDK release https://github.com/getsentry/sentry-javascript/releases

### How do you use Sentry?

Sentry Saas (sentry.io)

### Which SDK are you using?

@sentry/nextjs

### SDK Version

10.34.0

### Framework Version

Next 15.5.9 (OpenNext + Cloudflare Workers)

### Link to Sentry event

https://dogs-unleashed-ab.sentry.io/issues/93718351/events/f3276ea43fa8497c8d2ff2f00fa645eb/

### Reproduction Example/SDK Setup

App is a Next 15.5.9 Pages app deployed via OpenNext to Cloudflare Workers.

Setup summary:

- Build: `opennextjs-cloudflare build`
- Wrangler build output: `wrangler deploy --outdir .wrangler-sourcemaps --upload-source-maps ...`
- Debug IDs injected: `sentry-cli sourcemaps inject .wrangler-sourcemaps`
- Upload: `sentry-cli sourcemaps upload --debug-id-reference --rewrite .wrangler-sourcemaps`
- Worker deployed using the same bundle (no re-bundling):
`wrangler deploy .wrangler-sourcemaps/worker.js --no-bundle ...`

Artifacts are uploaded and visible in Sentry, including `~/worker.js` and `~/worker.js.map` with Debug IDs.

### Steps to Reproduce

1. Deploy Next 15.5.9 using OpenNext on Cloudflare Workers.
2. Generate + upload sourcemaps for `worker.js` with Debug IDs (sentry-cli inject + upload).
3. Trigger an error in `getServerSideProps`.

### Expected Result

Readable stack traces mapped to original source (e.g., `pages/sentry-server-test.tsx`).

### Actual Result

Sentry still shows `worker.js` frames and says:

- “Stack frame doesn’t have Debug IDs”
- “Uploaded files not deployed”

Example (screenshot):

### Additional Context

I can confirm:

- Debug IDs exist in `worker.js` and `worker.js.map`.
- The deployed worker file is the same artifact used for upload.
- Sentry release is set and consistent.

Seems like the runtime frames in the event don’t include Debug IDs, even though the bundle contains them. Is @sentry/nextjs (or OpenNext) stripping debug ID metadata in the runtime stack frames for Cloudflare Workers?

### Priority

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