fix No bundle url present in iOS (#19643)

Summary:
fix No bundle url present in iOS.
Related issue: facebook/react-native#14118, facebook/react-native#12754.
Pass all current ci
none
 [GENERAL] [BUGFIX] [iOS] - fix No bundle url present in iOS
Closes facebook/react-native#19643

Differential Revision: D8374583

Pulled By: hramos

fbshipit-source-id: 62d621f431d2067825dc701f87044ecb1d720f14

Author: gengjiawen

templates/HelloWorld/ios/HelloWorld/Info.plist

@@ -43,6 +43,8 @@
 	<key>NSAppTransportSecurity</key>
 	<!--See http://ste.vn/2015/06/10/configuring-app-transport-security-ios-9-osx-10-11/ -->
 	<dict>
+    <key>NSAllowsArbitraryLoads</key>
+    <true/>
 		<key>NSExceptionDomains</key>
 		<dict>
 			<key>localhost</key>