Prompt users to use reboot button in System Updates

So the update engine can write verify info of partitions which fixes bootloop on newer Pixel devices

app/src/main/java/com/topjohnwu/magisk/core/tasks/MagiskInstaller.kt

@@ -521,9 +521,10 @@ abstract class MagiskInstallImpl protected constructor(
             return false
         }
 
-        console.add("***************************************")
+        console.add("*************************************************************")
         console.add(" Next reboot will boot to second slot!")
-        console.add("***************************************")
+        console.add(" Go back to System Updates and press Restart to complete OTA")
+        console.add("*************************************************************")
         return true
     }
 

app/src/main/java/com/topjohnwu/magisk/ui/flash/FlashViewModel.kt

@@ -72,6 +72,7 @@ class FlashViewModel : BaseViewModel() {
                         MagiskInstaller.Direct(outItems, logItems).exec()
                 }
                 Const.Value.FLASH_INACTIVE_SLOT -> {
+                    showReboot = false
                     MagiskInstaller.SecondSlot(outItems, logItems).exec()
                 }
                 Const.Value.PATCH_FILE -> {