22.0b1 Sort type indicator symbol replicates each time overflow menu tapped

Checklist

• I have used the search function to see if someone else has already submitted the same bug report.
• I will describe the problem with as much detail as possible.

App

Thunderbird for Android

App version

22.0b1

Where did you get the app from?

Other

Android version

16

Device model

Oneplus10 Pro

Steps to reproduce

Related to change https://github.com/thunderbird/thunderbird-android/pull/11190

1. Start on the message list (eg. Inbox)
2. Tap the sort button. Observe only a single ⦁ indicator symbol is prefixed to the selected sort type.
3. Tap the three dot overflow menu button a few times (to the right of the sort button).
4. Tap the sort button. Observe multiple ⦁ indicator symbols are prefixed. One for each time the overflow menu was tapped.

Expected behavior

Only a single ⦁ indicator symbol is displayed representing the selected sort type.

Actual behavior

The number of displayed ⦁ indicator symbols grow each time the three dot overflow menu is tapped.

Logs

No response

Reproduce the issue from the message list using the sort button and overflow menu, then inspect the implementation changed in PR #11190. Trace how the selected sort indicator is assembled after the overflow menu is opened repeatedly. Done means the selected sort type shows exactly one ⦁ indicator after repeated taps, with regression coverage if the existing area has tests.