LogBox - Double sync rendering timeout

Summary:
On slower devices , 0.5s is not fast enough and we frequently render a black screen. Let's bump the sync rendering timeout to 1s.

Changelog: [Internal]

Reviewed By: sammy-SC

Differential Revision: D19282619

fbshipit-source-id: 0d9ae60f4869b0de7c4523c2cb33fbbf320c6438

React/CoreModules/RCTLogBox.mm

@@ -48,8 +48,8 @@
     [_surface start];
     [_surface setSize:frame.size];
 
-    if (![_surface synchronouslyWaitForStage:RCTSurfaceStageSurfaceDidInitialMounting timeout:.5]) {
-      RCTLogInfo(@"Failed to mount LogBox within 500ms");
+    if (![_surface synchronouslyWaitForStage:RCTSurfaceStageSurfaceDidInitialMounting timeout:1]) {
+      RCTLogInfo(@"Failed to mount LogBox within 1s");
     }
 
     _rootViewController = [UIViewController new];