Changed default bottomTabs.translucent to false

lib/ios/RNNTabBarPresenter.m

 	
 	[tabBarController rnn_setTabBarTestID:[options.bottomTabs.testID getWithDefaultValue:nil]];
 	[tabBarController rnn_setTabBarBackgroundColor:[options.bottomTabs.backgroundColor getWithDefaultValue:nil]];
-	[tabBarController rnn_setTabBarTranslucent:[options.bottomTabs.translucent getWithDefaultValue:YES]];
+	[tabBarController rnn_setTabBarTranslucent:[options.bottomTabs.translucent getWithDefaultValue:NO]];
 	[tabBarController rnn_setTabBarHideShadow:[options.bottomTabs.hideShadow getWithDefaultValue:NO]];
 	[tabBarController rnn_setTabBarStyle:[RCTConvert UIBarStyle:[options.bottomTabs.barStyle getWithDefaultValue:@"default"]]];
 	[tabBarController rnn_setTabBarVisible:[options.bottomTabs.visible getWithDefaultValue:YES]];

lib/ios/ReactNativeNavigationTests/RNNTabBarPresenterTest.m

 	RNNNavigationOptions* emptyOptions = [[RNNNavigationOptions alloc] initEmptyOptions];
 	[[self.bindedViewController expect] rnn_setTabBarTestID:nil];
 	[[self.bindedViewController expect] rnn_setTabBarBackgroundColor:nil];
-	[[self.bindedViewController expect] rnn_setTabBarTranslucent:YES];
+	[[self.bindedViewController expect] rnn_setTabBarTranslucent:NO];
 	[[self.bindedViewController expect] rnn_setTabBarHideShadow:NO];
     [[self.bindedViewController expect] rnn_setTabBarStyle:UIBarStyleDefault];
 	[[self.bindedViewController expect] rnn_setTabBarVisible:YES];