Use the MessageNotification component for the release notes toast (#25013)

Closes https://github.com/zed-industries/zed/issues/24981

Release Notes:

- N/A

---------

Co-authored-by: smit <0xtimsb@gmail.com>

crates/workspace/src/notifications.rs

@@ -529,7 +529,7 @@ pub mod simple_message_notification {
             v_flex()
                 .occlude()
                 .p_3()
-                .gap_3()
+                .gap_2()
                 .elevation_3(cx)
                 .child(
                     h_flex()