OOM crashing several times per day

### Steps to reproduce

Unclear. I am trying using the app per normal.

Crashes *feel* more frequent after sending messages in encrypted rooms though. I've noticed it mostly while marking rooms as read by clicking through several in my room list.

### Outcome

#### What did you expect?

n/a

#### What happened instead?

Crashing to blank page. Started happening within the last week. This is annoying because it takes 5-10 minutes for the app to start back up again.

### Operating system

Windows 11

### Application version

Element Nightly version: 0.0.1-nightly.2024090101 Crypto version: Rust SDK 0.7.1 (c8c9d15), Vodozemac 0.6.0

### How did you install the app?

The Internet

### Homeserver

t2l.io

### Will you send logs?

Yes

No file, test, or entry point is named. Start by reproducing the crash while marking several rooms as read, especially encrypted rooms, and review the promised logs; done means identifying the cause of the blank-page OOM and confirming the app no longer crashes under the reported use.

Written by the indexing model from the issue text.