Undo doesnt refresh the Card Browser's row list after deleting a note

### Checked for duplicates?

- [x] This issue is not a duplicate

### Does it also happen in the desktop version?

- [x] This bug does not occur in the latest version of Anki Desktop

### What are the steps to reproduce this bug?

1. open the card browser
2. select a note and delete it
3. tap "undo" on the snackbar that pops up

### Expected behaviour

the note should reappear in the browser list since its actually restored

### Debug info

```text
AnkiDroid Version = 2.24.0 (ebcf8e0e34921628b9b8a496c66ffd4adbb3705f)
Backend Version = 0.1.64-anki25.09.2 (25.09.2 3890e12c9e48c028c3f12aa58cb64bd9f8895e30)
Android Version = 13 (SDK 33)
ProductFlavor = play
Device Info = OnePlus | OnePlus | OP555BL1 | IV2201_IND | IV2201 | mt6877
WebView Info = [com.google.android.webview | 787118103]: Mozilla/5.0 (Linux; Android 13; IV2201 Build/TP1A.220905.001; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/150.0.7871.181 Mobile Safari/537.36
ACRA UUID = bbe8603c-4564-4f9f-9621-e2c7e5b9b556
FSRS = 5.1.0 (Enabled: false)
Crash Reports Enabled = true
```

### (Optional) Anything else you want to share?

dug into this a bit. CardBrowserViewModel.deleteSelectedNotes() calls refreshSearch() itself after deleting, but undo doesnt go through that path at all. tryUndo() in Undo.kt just calls undoableOp { undo() } with no handler, and the only thing listening (CardBrowserFragment.opExecuted) just calls notifyDataSetChanged() which re-renders the same stale list instead of re-searching.

so the note does actually come back in the collection, col.cardCount() proves it, but the browser just never re-queries to show it. wrote a test confirming this fails on main right now. already have a fix idea (make the viewmodel subscribe to changes and refresh, or have opExecuted call refreshSearch instead of just notifyDataSetChanged), will open a PR

### Research

- [x] I have checked the [manual](https://docs.ankidroid.org/) and the [FAQ](https://github.com/ankidroid/Anki-Android/wiki/FAQ) and could not find a solution to my issue
- [x] (Optional) I have confirmed the issue is not resolved in the latest alpha release ([instructions](https://docs.ankidroid.org/manual.html#betaTesting))