Update APF VTS to include the vendor API level check

APF is support is mandatory since VSR 14. Before that, the APF
requirement is optional. Vendors can opted into upgrading their
HAL to AIDL, so the VTS need to check if vendor API level on the device
and only mandate the APF capability check if the vendor API level is
greater or equal to 14.

Bug: 283181837
Test: atest VtsHalWifiStaIfaceTargetTest
Change-Id: I21513187d4ca99d721d0e9dc5e243adad77ab8c6