fix: thread-comment-ui panel width

[kenny-not-dead]

close #xxx
In the comments panel, scrolling appeared along the x-axis. I fixed this by changing the width of this panel.

Additionally, I'd like to discuss another change. I noticed that a significant number of sidebars have a width of 360, while others may have variations of 312, 333, and so on. Do you think it might be worthwhile to create a default value constant for the sidebar, for example, 360, and use it for all sidebars that are smaller than this width, and for those that are larger, set the desired value

The proposal is valid due to the fact that this is essentially a single sidebar, and the user can probably expect a standard size when they appear or change.

If you agree with this statement, I will make a PR about it.

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• Related tickets or issues have been linked in the PR description (or missing issue).
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[kenny-not-dead]

@jikkai

Please tell me if this is a problem on my part?
🙂

[jikkai]

@weird94 should take a look

[kenny-not-dead]

@weird94
Is this PR still relevant or can it be closed? but you still have scrolling there