fix: export CommentEditor

Author: maribethb

core/comments.ts

@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-export {CommentEditor} from './comments/comment_editor';
+export {CommentEditor} from './comments/comment_editor.js';
 export {CommentView} from './comments/comment_view.js';
 export {RenderedWorkspaceComment} from './comments/rendered_workspace_comment.js';
 export {WorkspaceComment} from './comments/workspace_comment.js';