notification: Better style details (#982)

| Before | After |
| - | - |
| <img width="752" alt="Before"
src="https://github.com/user-attachments/assets/d4e08e87-100a-4b8d-90f3-909900d41e66"
/> | <img width="752" alt="After"
src="https://github.com/user-attachments/assets/e84c145e-8990-4c47-bbff-0d4e86acca64"
/> |

crates/story/src/notification_story.rs

@@ -189,7 +189,7 @@ impl Render for NotificationStory {
                                 window.push_notification(
                                     Notification::new()
                                         .id::<ManualOpenNotification>()
-                                        .message("Click the Close Notification button to close.")
+                                        .message("You can close this notification by clicking the Close button.")
                                         .autohide(false),
                                     cx,
                                 );

crates/ui/src/notification.rs

@@ -270,9 +270,9 @@ impl Render for Notification {
             .border_1()
             .border_color(cx.theme().border)
             .bg(cx.theme().popover)
-            .rounded(cx.theme().radius)
+            .rounded(cx.theme().radius * 1.5)
             .shadow_md()
-            .py_2()
+            .py_3p5()
             .px_4()
             .gap_3()
             .when_some(icon, |this, icon| {