Fix startActivity for multi-user issue HSUM mode

Refer ag/30033454, Using startActivityAsUser and adding the UserHandle.CURRENT.

Bug: 368165906
Change-Id: Icf79a40b3b71fd31f6874e173074b97007f0f8c4
Test: Manual Test
Flag: EXEMPT bugfix

src/com/android/settings/network/SimOnboardingActivity.kt

@@ -19,6 +19,7 @@ package com.android.settings.network
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
+import android.os.UserHandle;
 import android.provider.Settings
 import android.telephony.SubscriptionManager
 import android.util.Log
@@ -588,7 +589,7 @@ class SimOnboardingActivity : SpaBaseDialogActivity() {
                     setFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
                 }
             }
-            context.startActivity(intent)
+            context.startActivityAsUser(intent, UserHandle.CURRENT)
         }
 
         var onboardingService:SimOnboardingService = SimOnboardingService()