Fix an issue wrong network operator name is displayed on MSIM devices

SIM1 operator network name is displayed as SIM2 operator network name on
Mobile Network setting because TelephonyManager#getNetworkOperatorName
with no subId is always used to set the summary text.

To resolve this issue, use TelephonyManager#getNetworkOperatorName with
subId to get operator network name based on SIM.

Bug: 109936826
Test: manual - Checked that the network name is displayed according to
the SIM network operator
Change-Id: Ief6d5148ef0e27bb31d869994cf64ba26ce4f7d4
1 file changed