Merge "Add Simultaneous Calling restrictions to PhoneAccount toString" into main

        sb.append(mExtras);

        sb.append(" GroupId: ");

        sb.append(Log.pii(mGroupId));

        sb.append(" SC Restrictions: ");

        if (hasSimultaneousCallingRestriction()) {

            sb.append("[ ");

            for (PhoneAccountHandle handle : mSimultaneousCallingRestriction) {

                sb.append(handle);

                sb.append(" ");

            }

            sb.append("]");

        } else {

            sb.append("[NONE]");

        }

        sb.append("]");

        return sb.toString();

    }