Sequence From Channel Selector Size

Currently the dimensions of the Sequence Edit and New Sequence modal/popup is very narrow and not resizable.

When trying to select a From channel for sending, we cut of the ending with ... as a "there is more here" indicator.

With dimensions available, it would be nice to make this its own page while creating/editing, or allow for more relative size based on rendered area or manually resizing so that it can be wider.

If a team has many channels with similar naming, it can be easy to accidentally pick the wrong one currently.