fix(ios): resolve build errors and add missing configureNativeFetcher method

Fixed Swift compilation errors preventing iOS build:
- Added explicit self capture [self] in closures in DailyNotificationReactivationManager
- Removed invalid BGTaskScheduler.shared.registeredTaskIdentifiers API call
- Fixed initialization order in DailyNotificationModel (verifyEntities after container init)

Added missing configureNativeFetcher method to iOS plugin:
- Implemented method matching Android functionality
- Stores configuration in UserDefaults for persistence
- Registered method in pluginMethods array
- Supports both jwtToken and jwtSecret parameters for compatibility

This resolves the runtime error "configureNativeFetcher is not a function"
that was preventing the test app from configuring the plugin.

ios/Plugin/DailyNotificationModel.xcdatamodeld/DailyNotificationModel.xcdatamodel/contents

@@ -36,7 +36,7 @@
         <attribute name="nextRunAt" optional="YES" attributeType="Date" usesScalarValueType="NO"/>
         <attribute name="stateJson" optional="YES" attributeType="String"/>
     </entity>
-    <entity name="NotificationContent" representedClassName="NotificationContent" syncable="YES" codeGenerationType="class">
+    <entity name="NotificationContent" representedClassName="NotificationContentEntity" syncable="YES" codeGenerationType="class">
         <attribute name="id" optional="NO" attributeType="String"/>
         <attribute name="pluginVersion" optional="YES" attributeType="String"/>
         <attribute name="timesafariDid" optional="YES" attributeType="String"/>