Comment count overlooking visibility

[jhcao1024]

Describe the bug

It seems that the comment count of a memo fails to take into account the visibility of the comments.

Steps to reproduce

1. Log in and write a public memo.
2. Write a public comment and another private one.
3. Sign out and click the explore tab.
4. The memo is shown with a comment count of 2 beside the comment icon (it counts both the public and private comments).
5. Click the comment icon, and only the public comment is visible, which is reasonable.

The version of Memos you're using

v0.22.1

Screenshots or additional context

1. The view of the user who wrote the 2 comments.
   

2. The view of another user or unlogged-in visitors, showing 2 beside the comment icon.
   

3. The expanded view of the memo (the 2nd user's view), showing only the public comment.