Add call options to now bar

[Htrainis]

Add hang up, mute, and speaker options integrated into the now bar while on a call. This will help with multitasking, and user convenience.

[USBetaModerator3]

Hello,

Thank you for taking the time to share your feedback with us.

We truly appreciate your suggestions and will share them with the relevant team for review and consideration in future updates. Your input helps us improve the overall One UI experience.

Thank you again for supporting the One UI Beta Program!

Regards,
One UI Beta Team