fix: focus after drag and deleting comments (#9074)

* fix: focus after drag and deleting comments

* chore: fix import

Author: maribethb

core/block_svg.ts

@@ -856,7 +856,7 @@ export class BlockSvg
       if (parent) {
         focusManager.focusNode(parent);
       } else {
-        focusManager.focusTree(this.workspace);
+        setTimeout(() => focusManager.focusTree(this.workspace), 0);
       }
     }
 

core/comments/rendered_workspace_comment.ts

@@ -19,6 +19,7 @@ import {IContextMenu} from '../interfaces/i_contextmenu.js';
 import {ICopyable} from '../interfaces/i_copyable.js';
 import {IDeletable} from '../interfaces/i_deletable.js';
 import {IDraggable} from '../interfaces/i_draggable.js';
+import {IFocusableNode} from '../interfaces/i_focusable_node.js';
 import type {IFocusableTree} from '../interfaces/i_focusable_tree.js';
 import {IRenderedElement} from '../interfaces/i_rendered_element.js';
 import {ISelectable} from '../interfaces/i_selectable.js';
@@ -42,7 +43,8 @@ export class RenderedWorkspaceComment
     ISelectable,
     IDeletable,
     ICopyable<WorkspaceCommentCopyData>,
-    IContextMenu
+    IContextMenu,
+    IFocusableNode
 {
   /** The class encompassing the svg elements making up the workspace comment. */
   private view: CommentView;
@@ -207,7 +209,12 @@ export class RenderedWorkspaceComment
   /** Disposes of the view. */
   override dispose() {
     this.disposing = true;
+    const focusManager = getFocusManager();
+    if (focusManager.getFocusedNode() === this) {
+      setTimeout(() => focusManager.focusTree(this.workspace), 0);
+    }
     if (!this.view.isDeadOrDying()) this.view.dispose();
+
     super.dispose();
   }