fix: add hasStartedReactNative check

Author: Nazar Sydiaha

ios/ReactNativeBrownfield.swift

@@ -70,6 +70,7 @@ class ReactNativeBrownfieldDelegate: RCTDefaultReactNativeFactoryDelegate {
    * Default value: nil
    */
   private var reactNativeFactory: RCTReactNativeFactory? = nil
+  private var hasStartedReactNative = false
 
   private var factory: RCTReactNativeFactory? {
     if let existingFactory = reactNativeFactory {
@@ -125,8 +126,8 @@ class ReactNativeBrownfieldDelegate: RCTDefaultReactNativeFactoryDelegate {
    * @param launchOptions Launch options, typically passed from AppDelegate.
    */
   @objc public func startReactNative(onBundleLoaded: (() -> Void)?, launchOptions: [AnyHashable: Any]?) {
-    guard reactNativeFactory == nil else { return }
-    _ = factory
+    guard !hasStartedReactNative else { return }
+    guard factory != nil else { return }
 
     if let onBundleLoaded {
       self.onBundleLoaded = onBundleLoaded
@@ -146,6 +147,8 @@ class ReactNativeBrownfieldDelegate: RCTDefaultReactNativeFactoryDelegate {
         )
       }
     }
+
+    hasStartedReactNative = true
   }
 
   /**
@@ -157,13 +160,17 @@ class ReactNativeBrownfieldDelegate: RCTDefaultReactNativeFactoryDelegate {
       return
     }
 
-    guard let factory = reactNativeFactory else { return }
+    guard let factory = reactNativeFactory else {
+      hasStartedReactNative = false
+      return
+    }
 
     factory.bridge?.invalidate()
 
     NotificationCenter.default.removeObserver(self)
     onBundleLoaded = nil
 
+    hasStartedReactNative = false
     reactNativeFactory = nil
   }