dialog-warning is incredibly loud

### Problem

The sound for dialog-warning (which is the same one used for critical notifications) is incredibly loud. This sound gets played, for example, when closing a tab with unedited changes in Visual Studio Code.

I feel like it's OK-ish for urgent notifications (battery critically low), but every time I close a tab and it plays it scares the everliving crap out of me.

### Proposal

Replace dialog-warning with a less terrifying sound

### Prior Art (Optional)

_No response_