1.6.9 doesn't place focus on textbox when replying to a message.

[ianmacd]

Describe the bug

Previous versions of Session Desktop correctly placed the focus on the cursor in the new message textbox after the user chose to quote-reply to a message.

1.6.9 doesn't give focus to the textbox, so the extra step of clicking in the box must be performed before one can type.

To Reproduce
Right-click and choose to Reply to a message. Start typing. Nothing happens. The textbox is not focused.

Screenshots or Logs

Other information (please complete the following information):

• Device: PC
• OS: Fedora Linux 34
• Session Version or Git commit hash: 1.6.9 official.

[Bilb]

should be fixed in 1.6.10

[ianmacd]

should be fixed in 1.6.10

Verified.