Github Agent "Continue in Copilot CLI" does not resume cloud session it opens an empty session instead

### Describe the bug

When I start an Agent session on GitHub.com and click **Continue in Copilot CLI**, the CLI command `copilot
--resume=` opens an empty/new session instead of the existing one.

The session I just used on the web is not listed in `/resume` (only an older archived session appears), even though
I am using the same GitHub account.

### Affected version

GitHub Copilot CLI 1.0.17.

### Steps to reproduce the behavior

1. Start a Copilot session on GitHub.com and work in it for a while (~30 minutes).
2. Click **Continue in Copilot CLI** on the web session.
3. Run the provided command in terminal:
copilot --resume=e4128d2f-eb80-4113-8a29-0a61caecf8c8
4. In CLI, check `/resume`.
5. the target recent session is missing; CLI opens an empty/new session.

### Expected behavior

`copilot --resume=` should restore the exact web session context and that session should appear in
`/resume`

### Additional context

_No response_