fix: sorting new tag added in TagsDialog

[TarekkMA]

Pull Request template

This PR is based on #8763

Purpose / Description

Fixes

Fixes #8764

Approach

sorting after the tag is checked

How Has This Been Tested?

Emulator

Checklist

• You have not changed whitespace unnecessarily (it makes diffs hard to read)
• You have a descriptive commit message with a short title (first line, max 50 chars).
• Your code follows the style of the project (e.g. never omit braces in if statements)
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner

[TarekkMA]

Added a test to check if the tag is sorted correctly when added

[mikehardy]

Sorry for the delay! LGTM - thanks @TarekkMA

[mikehardy]

Hi there!

Apologies for the delay, and if you're already submitted something to OpenCollective for PRs merged in June 2021 PRs merged, you may feel free to ignore this and it will be processed shortly

Just a friendly notice that we try to process OpenCollective payments monthly - it's time for June 2021 submissions

If you are interested in compensation for this work, the process with details is here:

https://github.com/ankidroid/Anki-Android/wiki/OpenCollective-Payment-Process#how-to-get-paid

(I only post one comment per person to avoid spamming you, regardless of the number of PRs merged, but this note applies to all PRs merged in May)

Thanks!