Should guard-foreign-escape use `#:callback-exns?`?

[LiberalArtist]

Now that the #:callback-exns? option for _fun has been added (in https://github.com/racket/racket/commit/bf8741e727fdf1844c65677f9b81ff71e5a42f3d), maybe guard-foreign-escape should use it:

https://github.com/racket/draw/blob/253dbf895966fd8179d4b8c3620c60190647cfd0/draw-lib/racket/draw/unsafe/callback.rkt#L7-L18