Using main bundle instead of thread bundle in iOS release mode (react-native 0.68.1)

[therealgilles]

I believe this change broke using the correct thread bundle in iOS release mode with react-native 0.68.1, and instead using the main bundle:

THREAD NAME App/Workers/my_worker  // <-- correct path
starting Thread: file:///Users/.../Library/Developer/CoreSimulator/Devices/.../my-app.app/main.jsbundle // <-- wrong bundle

Anyone has a suggestion for a fix?

[therealgilles]

Here is a possible fix in ThreadManager.m but probably not the best one:

//NSURL *threadURL = [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:name fallbackResource:name];
  NSURL *threadURL = [[RCTBundleURLProvider sharedSettings] jsBundleURLForBundleRoot:name fallbackURLProvider:^NSURL * {
          return [[NSBundle mainBundle] URLForResource:name withExtension:@"jsbundle"];
      }];

[RustyTheBoyRobot]

Can confirm this fixes things for RN 68. I had tried another suggestion of simply removing the fallbackResource param, but that used the wrong bundle for the thread.