Long thread names in the subchannels modal were cut off instead of ending with ellipsis because of `align-self: flex-start;` property, that had no other effect because `display: block;` (default)
was set.
The sidebars modal displays the names correctly, and it does not have the `align-self: flex-start;` in the corresponding style:
https://github.com/CommE2E/comm/blob/master/web/modals/threads/sidebars/sidebars-modal.css#L44