Fix problem with file-modification-time in tramp-sshfs.el

Fix problem with file-modification-time in tramp-sshfs.el

* lisp/net/tramp-crypt.el (tramp-crypt-file-name-handler-alist):
* lisp/net/tramp-rclone.el (tramp-rclone-file-name-handler-alist):
* lisp/net/tramp-sudoedit.el (tramp-sudoedit-file-name-handler-alist):
* lisp/net/tramp-sshfs.el (tramp-sshfs-file-name-handler-alist):
Use `tramp-handle-file-notify-add-watch',
`tramp-handle-file-notify-rm-watch' and
`tramp-handle-file-notify-valid-p'.
(tramp-sshfs-handle-write-region): Set file modification time.
(Bug#54016)

* test/lisp/net/tramp-tests.el (tramp--test-asynchronous-processes-p):
Filter out tramp-adb on multi-byte `default-directory'.
(tramp--test-hpux-p, tramp--test-macos-p): Protect against errors.
(tramp--test-check-files): Discriminate also tramp-sshfs.el.