SL-12456 Potential fix for NSPersistentUIFileManager crash

NSPersistentUIFileManager is supposed to be responsible for restoring window position and size

indra/llwindow/llwindowmacosx-objc.mm

@@ -217,6 +217,7 @@ NSWindowRef createNSWindow(int x, int y, int width, int height)
 													  styleMask:NSTitledWindowMask | NSResizableWindowMask | NSClosableWindowMask | NSMiniaturizableWindowMask | NSTexturedBackgroundWindowMask backing:NSBackingStoreBuffered defer:NO];
 	[window makeKeyAndOrderFront:nil];
 	[window setAcceptsMouseMovedEvents:TRUE];
+    [window setRestorable:FALSE]; // Viewer manages state from own settings
 	return window;
 }