Settings' search should be cancellable

[Arthur-Milchior]

How to reproduce:

• Open settings
• Search any term
• Press back

Expected result:

• The settings menu

Actual result:

• Closing the settings

If I was looking for a setting and don't find it so I need to browse, having the settings closed on me is frustrating

AnkiDroid Version = 2.21alpha13 (8614558)
Backend Version = 0.1.50-anki25.02 (25.02 038d85b1d9e1896e93a3e4a26f600c79ddc33611)
Android Version = 15 (SDK 35)
ProductFlavor = play
Device Info = Google | google | husky | husky | Pixel 8 Pro | husky
Webview User Agent = Mozilla/5.0 (Linux; Android 15; Pixel 8 Pro Build/AP4A.250205.002; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/133.0.6943.137 Mobile Safari/537.36
ACRA UUID = 1ee1be7e-8149-4589-aca8-f45e0b56a2a5
FSRS = 2.0.3 (Enabled: false)
Crash Reports Enabled = true

[iamits-07]

Hi! I'd like to work on this issue as my first contribution. Could you please assign it to me?

[rishabh-jain89]

Hey @Arthur-Milchior! I'd like to work on this issue. Do I need to be assigned to it, or can I start working on it immediately and submit a PR?

[Amit-kumar80844]

"I've identified an issue where, after searching in settings and then clearing the search text, Anki does not revert to the previous settings screen as expected. I believe this happens because the test case does not properly handle the scenario where the search text becomes null. I would like to work on fixing this behavior to ensure that clearing the search restores the previous settings screen correctly."
assign to me please

[Akshit517]

"I've identified an issue where, after searching in settings and then clearing the search text, Anki does not revert to the previous settings screen as expected. I believe this happens because the test case does not properly handle the scenario where the search text becomes null. I would like to work on fixing this behavior to ensure that clearing the search restores the previous settings screen correctly." assign to me please

The issue is related to back stack management when you press back button not when clearing the 'search text' result