[BUG]: Total cards due at the top of the screen is incorrect if > 9999 cards in a queue

### 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?


I believe I have more than 20000 cards due, but the top of the screen reports a much smaller number (11471). I'm not sure how to reproduce this, perhaps have a collection with a very large number of cards?

### Expected behaviour

I would expect a larger number of cards, something much higher than 20000.

### Debug info

```text
AnkiDroid Version = 2.20.0 (d41d16a45c00b0bdbd3b13ac988143db5ef8ae90)

Backend Version = 0.1.48-anki24.11 (24.11 c47638ca36f99dd4f3b81ae82d964aec66e392e0)

Android Version = 14 (SDK 34)

ProductFlavor = play

Manufacturer = samsung

Model = SM-G996U1

Hardware = qcom

Webview User Agent = Mozilla/5.0 (Linux; Android 14; SM-G996U1 Build/UP1A.231005.007; wv) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/131.0.6778.105 Mobile Safari/537.36

ACRA UUID = e4b2e969-bfa7-4705-a683-ec25e9ddd4d9

FSRS = 1.4.3 (Enabled: false)

Crash Reports Enabled = true
```

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

_No response_

### Research

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