Error modal text is not selectable for copying

### The problem

On macOS at least, the error modal text cannot be selected and copied, making it harder for the user to search for help on the issue.

### Release version

Version 3.4.3 (arm64)

### Operating system

macOS

### Steps to reproduce the behavior

_No response_

### Log files

_No response_

### Screenshots

_No response_

### Additional context

_No response_

Start by reproducing the error modal on macOS using the reported 3.4.3 arm64 environment, then locate the desktop error-modal implementation. Confirm which text is rendered and whether it can be selected and copied; done means users can select and copy the modal text for searching or sharing.

Written by the indexing model from the issue text.