When no SIM, we can't get active subscription info.
So current code will not create TelephonyManager and cause IMEI not
retrieved.
Create TelephonyManager with default if no subscription info.
Bug: 132215720
Test: test with SIM and without SIM to check SIM status UI and atest ImeiInfoDialogControllerTest pass
Change-Id: Iaeb932ea66a6bee77136251941cca657984e456f