ability to rename categories in "Favorites" on mobile

in the "Favorites" pseudo-guild section, i can create categories to organize my favorite channels, but there's no apparent way to rename them! not even if i long press on the category name.

there should be an option along the lines of "Rename category" when you long press on a favorite category.

I consider this to be a missing feature instead of a bug (like https://feedback.fluxer.com/p/3877) because the corresponding control for real guild categories is presented alongside role permission overrides and content warnings. it's not just a button that's missing from the UI; the guild equivalent can't just be ported over 1:1 and as such implementing this actually requires design.