Fix space and copy/paste when editing a channel (#3030)

This fixes several bugs with how spaces and keyboard commands interact
with channel creating / renaming.

fixes
https://github.com/zed-industries/community/discussions/2076#discussioncomment-7096959

Release Notes:

- N/A
8c90157990Mikayla Maki committed on 9/25/2023, 8:20:00 PM· committed by GitHubparentsb454f43667fc25
2 files changedLine totals unavailable