Feature Request: Add setting to disable PR status indicator in prompt footer

Description

The PR review status indicator added in v2.1.20 is a useful feature, but I'd like the ability to disable it.

Current Behavior

The prompt footer now shows the current branch's PR state (approved, changes requested, pending, draft, or merged) as a colored dot with the PR number and a clickable link. This appears automatically when on a branch associated with a PR.

Requested Behavior

Add a setting to hide/disable this indicator, such as:

{
  "showPRStatus": false
}

Or alternatively:

{
  "promptFooter": {
    "showPRStatus": false
  }
}

Use Case

I have a custom statusline that already shows the information I need, and the additional PR indicator adds visual clutter. Having the option to disable it would allow users to customize their interface to their preferences.

Environment

• Claude Code version: 2.1.23
• OS: Linux (WSL2)