Handle Unsupported errors when enabling bracketed paste

[kirawi]

The error comes from here when we setup the terminal:

helix/helix-tui/src/backend/crossterm.rs

Lines 134 to 139 in f27fdb2

	execute!(
	self.buffer,
	terminal::EnterAlternateScreen,
	EnableBracketedPaste,
	EnableFocusChange
	)?;

To prevent the exit on startup we could handle the Unsupported error from crossterm (https://github.com/crossterm-rs/crossterm/blob/08762b3ef4519e7f834453bf91e3fe36f4c63fe7/src/event.rs#L390-L395) instead and log that helix won't be able to use bracketed paste

Originally posted by @the-mikedavis in #9025 (reply in thread)

[jigypeper]

I have made an attempt, but no permissions to push to a branch

[jigypeper]

need to fork it?

[kirawi]

Closed by #9353