Set apex_available for test_framework-sdkextensions am: c7a0b4273e am: 59a20f9fbb

Original change: https://googleplex-android-review.googlesource.com/c/platform/packages/modules/SdkExtensions/+/11757801

Change-Id: Ie302012d71bf94705fe1bcd7c9814b580a19462f