feat: when creating new thread, cursor should autofocus on message input box

[freelerobot]

Expected:

1. I click on pencil / start new thread
2. I see an empty thread
3. Expectation: the text input box is focused & selected

ACtual:

1. I click on pencil
2. I see empty thread
3. I click message box

[Van-QA]

@urmauur can you help me double check this? It's not working, the message input is not auto-focused when user creates a new thread

[urmauur]

@urmauur can you help me double check this? It's not working, the message input is not auto-focused when user creates a new thread

Tested and works well on my side 🚀