Fix collapse animation with deferred comments

[hjiangsu]

Pull Request Description

This PR fixes an issue where deferred comments were not being collapsed properly, and thus was always shown even when the parent comment was collapsed.

Collapsing comment threads does not show any animation

@micahmo I'm not sure if this also fixes this issue, so let me know! For me, it feels like if "Hide Parent Comment when Collapsed" is enabled, the animation is instantaneous whereas if it's disabled, it feels like a more proper "shrinking" animation.

Issue Being Fixed

Issue Number: #1413

Screenshots / Recordings

I'm trying out the macOS build here, so the recording is using that!

Screen.Recording.2024-06-04.at.6.04.58.PM.mov

Checklist

• Did you update CHANGELOG.md?
• Did you use localized strings where applicable?
• Did you add semanticLabels where applicable for accessibility?

[micahmo]

Awesome, this definitely fixes the problem with deferred comments!

With "Hide Parent Comment when Collapsed" disabled, there is still no animation for collapsing full threads, and even collapsing deferred comments seems to have an interesting curve.

qemu-system-x86_64_q1bPNlWFw9.mp4

[hjiangsu]

Thanks for confirming! I'll try to fix that in a separate PR