…18202) (#18204)

Co-authored-by: Atif Ali <atif@coder.com>

Co-authored-by: Steven Masley <Emyrk@users.noreply.github.com>
Co-authored-by: Jaayden Halko <jaayden.halko@gmail.com>
Co-authored-by: Steven Masley <stevenmasley@gmail.com>
Co-authored-by: Ethan <39577870+ethanndickson@users.noreply.github.com>

Cherry-picks following commits:

*
f974add
reverts
d63417b
*
d779126
reverts
2ec7404

---------

Co-authored-by: Bruno Quaresma <bruno@coder.com>

Co-authored-by: ケイラ <mckayla@hey.com>

… (#18378)

Cherry-picked fix(site): remove trailing comment from cursor.svg
(#18072)

The trailing comment was preventing the SVG from rendering on Coder
Desktop macOS, with the SVG loader we use. I've moved it to a place
where it's apparently OK? Couldn't tell you why.
https://validator.w3.org/ had no complaints.

I tested this by hardcoding the icon to that served by a build of coder
with this new svg.



![image.png](https://graphite-user-uploaded-assets-prod.s3.amazonaws.com/jI7h94jB23BidWsYTSCk/4c94ae5f-d0e2-496e-90eb-4968cf40d639.png)

The first icon is without the trailing comment, the second is with.

Co-authored-by: Ethan <39577870+ethanndickson@users.noreply.github.com>

…ick #18673) (#18677)

Cherry-picked fix: stop tearing down non-TTY processes on SSH session
end (#18673)

(possibly temporary) fix for #18519

Matches OpenSSH for non-tty sessions, where we don't actively terminate
the process.

Adds explicit tracking to the SSH server for these processes so that if
we are shutting down we terminate them: this ensures that we can shut
down quickly to allow shutdown scripts to run. It also ensures our tests
don't leak system resources.

Co-authored-by: Spike Curtis <spike@coder.com>