refactor(core): move actions to footer of notification card (#11894)

This PR move all actions button to the footer of `NotificationCard`. There are some example as following:

### No Changes
![CleanShot 2025-04-22 at 20.02.58@2x.png](https://graphite-user-uploaded-assets-prod.s3.amazonaws.com/MyRfgiN4RuBxJfrza3SG/1207cbfb-6033-48f4-8a7b-b7b024f16881.png)

![CleanShot 2025-04-22 at 20.03.42@2x.png](https://graphite-user-uploaded-assets-prod.s3.amazonaws.com/MyRfgiN4RuBxJfrza3SG/6da27303-06c3-4f40-b3f9-3cf88759f685.png)

![CleanShot 2025-04-22 at 20.03.57@2x.png](https://graphite-user-uploaded-assets-prod.s3.amazonaws.com/MyRfgiN4RuBxJfrza3SG/a53d2bdf-a103-4275-9833-a55387af6f09.png)

### Changes
### Before
![CleanShot 2025-04-22 at 20.07.40@2x.png](https://graphite-user-uploaded-assets-prod.s3.amazonaws.com/MyRfgiN4RuBxJfrza3SG/d785b12b-480c-4b9d-bb0b-d93dd18939a2.png)

#### After
![CleanShot 2025-04-22 at 20.05.51@2x.png](https://graphite-user-uploaded-assets-prod.s3.amazonaws.com/MyRfgiN4RuBxJfrza3SG/242a9956-6a68-46a7-865a-454117ee997c.png)

blocksuite/affine/blocks/embed/src/common/render-linked-doc.ts

@@ -364,13 +364,16 @@ export function notifyDocCreated(std: BlockStdScope, doc: Store) {
     message: 'You can click undo to recovery block content',
     accent: 'info',
     duration: 10 * 1000,
-    action: {
-      label: 'Undo',
-      onClick: () => {
-        doc.undo();
-        clear();
+    actions: [
+      {
+        key: 'undo',
+        label: 'Undo',
+        onClick: () => {
+          doc.undo();
+          clear();
+        },
       },
-    },
+    ],
     abort: abortController.signal,
     onClose: clear,
   });