Don't request secondary internet STA if it deletes privileged iface

Prevent automatic teardown of privileged ifaces due to secondary
internet request by checking the impact of creating the secondary STA
beforehand.

Bug: 277997652
Test: atest HalDeviceManagerTest WifiConnectivityManagerTest
Change-Id: I4bbd302d0480214668b75a3529d6ddd53bdd949a
4 files changed