What would you like to be added:
Add an option to invert the alert list panel sort order when set to "Recent state changes" mode.

Why is this needed:
The current order is confusing, new entries are added at the bottom, nobody looks at the bottom for new entries.
New and important alerts are scrolling out of the box and you will never notice them.

![alarm_panel](https://user-images

Bug description

Feature Flag cannot recreate with the same key after deleting

Steps to reproduce:

1. create feature flag with key bla
2. delete the feature flag
3. try to create again feature flag with bla key
4. alert will popup with This key already exists
   

Ex

In my experience, far and away the primary reason to use DatabaseError::downcast_ref() is to check the constraint name. It would be nice not to have to downcast, though:

https://github.com/launchbadge/sqlx/blob/master/sqlx-core/src/error.rs#L146

 pub trait DatabaseError: ... {
    // existing methods omitted

    /// Returns the name of the constraint that triggered the error, if