[android] Swiping right to close E2EE chat causes temporary timeline issues

[monospacedmagic]

Describe the bug

See repro

Reproduction

1. Open an E2EE DMs room with a good amount of history.
2. Swipe right to close it.
3. It will suddenly show an indicator for somewhere between 1 and 30 "new" messages for that DMs room.
4. Opening the E2EE DMs room by swiping left shows a bunch of message history gone.
5. Restarting the app causes the message history to reappear.

Expected behavior

This doesn't happen.

Platform and versions

1. OS: Android 17 (GrapheneOS v2026071501)
2. Browser: Vanadium WebView v151.0.7922.29.0 (based on Chromium WebView)
3. Sable version: v1.20.1-nightly.260729025512
4. Homeserver: monospacedmagic.dev (running continuwuity:latest-maxperf (v26.7.1) via Podman)

Additional context

No response