Can't login with VPN `wrangler pages deploy`

### What versions & operating system are you using?

macOS Version 26.0.1 (25A362), Apple M4 Max

### Please provide a link to a minimal reproduction

_No response_

### Describe the Bug

When using a VPN, the `wrangler pages deploy` command throws an error. If I log in without the VPN and then run it afterward, the issue doesn’t occur.

This has been going on for years with Outline VPN (haven't tested others).

Step 1:

After clicking Allow button:

### Please provide any relevant error logs

Attempting to login via OAuth...
Opening a link in your default browser: https://dash.cloudflare.com/oauth2/auth?response_type=code&client_id=...
✘ [ERROR] The body of the response was HTML rather than JSON. Check the debug logs to see the full body of the response.

✘ [ERROR] It looks like you might have hit a bot challenge page. This may be transient but if not, please contact Cloudflare to find out what can be done. When you contact Cloudflare, please provide your Ray ID: 99388266e9568d73-HEL

This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason:
Error: Invalid JSON in response: status: 403 Forbidden
at getJSONFromResponse (/Users/.../node_modules/wrangler/wrangler-dist/cli.js:109987:11)
at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
at async exchangeAuthCodeForAccessToken (/Users/.../node_modules/wrangler/wrangler-dist/cli.js:109581:31)
at async Server. (/Users/.../node_modules/wrangler/wrangler-dist/cli.js:109737:30)