Fix displayed article comment counts (take into account comments hidden after the author is assigned spam)

[PhilipHow]

Describe the bug

Article comment counts are not updating when comment authors are being applied with the spam role.

To Reproduce

• Find an article with multiple comments
• Apply spam role to one of the comment authors
• Wait for any caches to be invalidated
• Comment is hidden, but comment count remains the same.

Expected behavior

The comment count should show the number of visible comments on the article (i.e. not counting those from users applied with spam).

Screenshots

Additional context

• We may not want to update the actual comment count, but dynamically calculate the actual number of displayed comments.

[github-actions]

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[lightalloy]

I think, the count in the "View full discussion (n comments)" was not updated, so may show wrong number in some cases.
Other places should be fine.