Revert "Revert "Use TelecomManager.isInCall instead of TelephonyManager.getCallState""

This reverts commit a67a1d0c0a912d9ca498855f2834cd2a794f937a.

Reason for revert: Revert broke SystemUI

Bug: 257538981
Bug: 261505371
Change-Id: I8fbe872427bcd3e39b5304ed82194fcd78efe674
1 file changed