Improve performance of 'file-name-case-insensitive-p' for Tramp files

Improve performance of 'file-name-case-insensitive-p' for Tramp files

Previously, each function in 'tramp-foreign-file-name-handler-alist'
would call 'tramp-dissect-file-name', resulting in it being called
several times whenever 'tramp-find-foreign-file-name-handler' was
called.  Now, functions take the dissected file name to avoid this
duplicated effort.  (Bug#51699)

* etc/NEWS: Announce this change.

* lisp/net/tramp-adb.el (tramp-adb-file-name-p):
* lisp/net/tramp-ftp.el (tramp-ftp-file-name-p):
* lisp/net/tramp-gvfs.el (tramp-gvfs-file-name-p):
* lisp/net/tramp-rclone.el (tramp-rclone-file-name-p):
* lisp/net/tramp-smb.el (tramp-smb-file-name-p):
* lisp/net/tramp-sshfs.el (tramp-sshfs-file-name-p):
* lisp/net/tramp-sudoedit.el (tramp-sudoedit-file-name-p):
Accept dissected file names.

* lisp/net/tramp.el (tramp-ensure-dissected-file-name): New function.
(tramp-find-foreign-file-name-handler): Pass dissected file name to
functions.
(tramp-connectable-p): Use 'tramp-ensure-dissected-file-name'.