[lib] Sort drawer items alphabetically

Summary:
This diff sorts communities and channels alphabetically by ENS-resolved names. It addresses ENG-8793, which has some more context.

Depends on D12700

Test Plan:
I tested the stack as follows:

1. I tested both native and web
2. I tested both normal communities and GENESIS
3. I tested both uppercase and lowercase names
4. I made sure the list of channels was the same before and after (only the order changed)
5. I edited a name on web and made sure its appearance in the order changed

Reviewers: tomek, inka

Reviewed By: tomek

Differential Revision: https://phab.comm.dev/D12701