cocoa-cb: force layer update on resize

this fixes some race condition where the content of the layer wasn't
updated because the size didn't changed and the layer was already marked
as updated. just force an update on reconfig.

Fixes #7989

video/out/cocoa_cb_common.swift

@@ -67,7 +67,7 @@ class CocoaCB: Common {
         } else {
             DispatchQueue.main.async {
                 self.updateWindowSize(vo)
-                self.layer?.update()
+                self.layer?.update(force: true)
             }
         }
     }