Fix FOR_EACH_TAIL fontification (bug#62951)

Fix FOR_EACH_TAIL fontification (bug#62951)

Fix the fontification inconsistency between different FOR_EACH_TAIL's.
See the comment for more explanation.  Also enable the emacs-devel
feature automatically when c-ts-mode-emacs-sources-support is on.

* lisp/progmodes/c-ts-mode.el:
(c-ts-mode--for-each-tail-regexp): Move up.
(c-ts-mode--font-lock-settings): New font-lock rule for FOR_EACH_TAIL.
(c-ts-mode--fontify-for-each-tail): New function.
(c-ts-mode): Automatically enable emacs-devel feature.