mac/window: fix unfs window size retrieval

the unfsContentFrame wasn't updated when externally resized leading to
a wrong unfs window size afterwards. update it on windowDidResize event
when not in fs, not animating and not live resizing.

video/out/mac/view.swift

@@ -165,6 +165,7 @@ class View: NSView, CALayerDelegate {
     }
 
     override func magnify(with event: NSEvent) {
+        common.window?.isAnimating = event.phase != .ended
         event.phase == .ended ? common.windowDidEndLiveResize() : common.windowWillStartLiveResize()
         common.window?.addWindowScale(Double(event.magnification))
     }

video/out/mac/window.swift

@@ -550,6 +550,9 @@ class Window: NSWindow, NSWindowDelegate {
     }
 
     func windowDidResize(_ notification: Notification) {
+        if let contentViewFrame = contentView?.frame, !isAnimating && !isInFullscreen && !inLiveResize {
+            unfsContentFrame = convertToScreen(contentViewFrame)
+        }
         common.windowDidResize()
     }