isNotificationOnly: true is not working in teams mobile app

[viveknuna]

I have followed this documentation. I don't want users to send messages. So I changed isNotificationOnly: true and it's working as expected on my PC. I am able to send messages to teams on the mobile app. So Do we need to make some additional changes in the manifest.json file?

  "bots": [
    {
      "botId": "11111111-1111-1111-1111-111111111111",
      "scopes": [
        "personal",
        "groupchat"
      ],
      "supportsFiles": false,
      "isNotificationOnly": true
    }
  ]

More details:

<TargetFramework>net6.0</TargetFramework>

These are the bot-related packages added to my project.

I have asked this question on StackOverflow as well, I am posting it here for better reach.