[PM-38629] Update server selection menu item for BIT configuration

[jprusik]

🎟️ Tracking

PM-38629

📔 Objective

The reference to the environment selector menu item for “self-hosted” has changed and needs to be updated for BIT to run properly again:
https://github.com/bitwarden/browser-interactions-testing/actions/runs/27037098379/job/79803735815

[github-actions]

🤖 Bitwarden Claude Code Review

Overall Assessment: APPROVE

Reviewed a single-line locator update in fixtures/extension-setup.ts that swaps the "self-hosted" environment selector item from getByRole("menuitem", ...) to a scoped #cdk-overlay-0 + getByRole("button", ...) lookup. The change is narrowly targeted at unblocking the CI failure referenced in PM-38629 (the client's environment selector item role changed from menuitem to button inside a CDK overlay). Scope is limited to test fixture setup; no production code, security boundaries, or test data are affected.

Code Review Details

No findings.