localStorage / IndexDB write failures are fatal

### Steps to reproduce

1. Run out of disk space or use a browser that disallows writing to localStorage, such as mobile safari in private mode
2. Perform an operation in Element Web that requires writing to localStorage. There are many of these cases all over the app.

### What happened?

A console error will usually be visible as we don't typically catch these exceptions.

The app will show undefined behaviour depending on what was prevented from happening; ranging from minor state not being preserved across sessions to irretrievable data loss of state that might only be held client side.

### What did you expect?

The app should gracefully handle localStorage write failure. It should inform the user and cleanly abort the current operation.

### Operating system

_No response_

### Application version

_No response_

### How did you install the app?

_No response_