Not able to send on call response using send digit function

[Punit30]

Issue Summary

I am encountering an issue with sending digits on a call using a custom keypad in both iOS and Android. When the sendDigits() function is called, it returns true, but nothing is being sent to the other side of the call. During debugging, I observed the following message: "E/TwilioVoiceConnectionService(27523): onStartCommand: ACTION_SEND_DIGITS is missing String EXTRA_DIGITS." The cause of this problem is not clear, and I am seeking assistance to understand and resolve the issue.

**Note: When giving response on twilio_voice call from android native UI keypad it works fine.

Steps to Reproduce

1. Create a Google Meet meeting from a professional account or any other outgoing call requiring a PIN to join. It allows you to join via a call by entering the meeting PIN.
2. Below is the code for my dialpad:

   Expanded(
   child: DialPadGrid(
           isDialPad: false,
           aspectFactor: 3.1,
           itemCount: 12,
           primaryTextColor: Pallete.white,
           secondaryTextColor: Pallete.slateBlue,
           buttonColor: Pallete.lightSteelBlue,
           controller: controller,
           onKeyPress: (value) async {
             print(value);
             await _tv.call.sendDigits(value).then((value) => print("digit sent succefully"));
           },
      ),
   )

Any other relevant information. For example, why do you consider this a bug and what did you expect to happen instead?

I'm unsure whether this is a bug, but I would appreciate guidance on optimizing on-call responses through a custom dialpad. I aim to enhance the user experience and would like to understand the necessary adjustments for achieving this goal.