Add API support to perform slot switching on 2pSIM+1eSIM configured devices

This change allows system apps to enable eSIM slot on 2pISM+1eSIM configured devices where P+P is the default configuration.

Bug: 427638226
Test:  atest CtsTelephonyTestCases:android.telephony.cts.TelephonyManagerTest#testSimTypeInfo
Flag: com.android.internal.telephony.flags.support_slot_switching_2psim_1esim_config

Change-Id: Ie2d2421cd01dbb211cd56b9bc9d22e89e9fdd8a1