fix: comment text input size in samples (#8042)

core/comments/comment_view.ts

@@ -393,6 +393,8 @@ export class CommentView implements IRenderedElement {
     if (this.workspace.RTL) {
       this.foreignObject.setAttribute('x', `${-size.width}`);
     }
+    this.textArea.style.width = `${size.width}px`;
+    this.textArea.style.height = `${size.height}px`;
   }
 
   /**