[Settings - Startup]: Keyboard focus is going on 'Startup' heading which is a non-interactive control.

### Windows Terminal version

1.13.10984.0

### Windows build number

22598.200

### Other Software

**Test Environment:**
**OS:** Windows 11 Version 21H2 (OS Build 22598.200)
**Screen Reader:** Narrator.

### Steps to reproduce

**Repro Steps:**
Open Windows Terminal.
Open Settings page using "Ctrl + ',' ".
Verify that Keyboard focus is going on 'Startup' heading which is a non-interactive control.

**User Experience: -> Priority 1**
Users with motor impairments who rely on keyboard will get confused if Keyboard Focus is going to non-interactive elements as well.

**Note:**
Issue is repro for all the tab items.

**Guideline Reference:**
https://www.w3.org/WAI/WCAG21/Understanding/focus-order.html

**Attachments:**

[Keyboard.focus.is.going.on.Startup.heading.which.is.a.non-interactive.control.zip](https://github.com/microsoft/terminal/files/8610267/Keyboard.focus.is.going.on.Startup.heading.which.is.a.non-interactive.control.zip)

### Expected Behavior

Keyboard focus should not move to 'Startup' heading which is a non-interactive control.

### Actual Behavior

Keyboard focus is going on 'Startup' heading which is a non-interactive control.