fix: 移除通知徽章设置并在应用激活时重置徽章数

移除SetReminderHandler中的通知徽章设置，避免重复显示
在AppDelegate中添加应用启动和激活时的徽章数重置逻辑

ios/Runner/AppDelegate.swift

@@ -7,9 +7,15 @@ import UIKit
     _ application: UIApplication,
     didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
   ) -> Bool {
+    application.applicationIconBadgeNumber = 0
     GeneratedPluginRegistrant.register(with: self)
     return super.application(application, didFinishLaunchingWithOptions: launchOptions)
   }
+
+  override func applicationDidBecomeActive(_ application: UIApplication) {
+    application.applicationIconBadgeNumber = 0
+    super.applicationDidBecomeActive(application)
+  }
   
   // 添加URL回调监听
   override func application(

local_plugins/chat_api/ios/chat_api/Sources/chat_api/SystemFunctionHandler.swift

@@ -823,7 +823,6 @@ private class SetReminderHandler: FunctionHandler {
         let notificationContent = UNMutableNotificationContent()
         notificationContent.title = title
         notificationContent.body = content
-        notificationContent.badge = 1
         
         // 关键配置：闹钟级声音（突破静音，最大音量）
         notificationContent.sound = UNNotificationSound.criticalSoundNamed(