talkatu/talkatu

Fix the input in the demo.
gtk4
2022-02-03, Gary Kramlich
1819a3f27516
Fix the input in the demo.

We had some over zealous can-focus's set to 0 which was the main issue. The
other stuff was just stuff to clean up I found along the way.

Testing Done:
Ran the demo verified I can input text. Sending is still broken but that's another matter entirely...

Reviewed at https://reviews.imfreedom.org/r/1283/
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