Fix NS child frame in native fullscreen (bug#36672)
* lisp/frame.el (toggle-frame-fullscreen): Don't sleep on cocoa.
Fullscreen animation waiting is moved to src/nsterm.m.
* src/nsterm.h (EmacsView): Add in_fullscreen_transition,
inFullScreenTransition, waitFullScreenTransition.
(NSWindowCollectionBehaviorFullScreenAuxiliary): New define.
* src/nsterm.m (ns_make_frame_visible): Wait for fullscreen animation.
(ns_set_parent_frame): Set frame collection behavior; make child frames
non-fullscreen; make non-child frames fullscreen if parent was fullscreen.
([EmacsView initFrameFromEmacs]): Set in_fullscreen_transition; set frame
collection behavior according to parent frame.
([EmacsView windowDidMove]): Remove code by commenting with "fixme".
([EmacsView windowWillEnterFullScreen], [EmacsView windowDidEnterFullScreen])
([EmacsView windowWillExitFullScreen], [EmacsView windowDidExitFullScreen]):
Set in_fullscreen_transition.
([EmacsView inFullScreenTransition], [EmacsView waitFullScreenTransition]):
New methods.
([EmacsView updateCollectionBehavior]): Set collection behavior according to
parent frame.
([EmacsView toggleFullScreen]): Wait for fullscreen animation.