Set apex_available for test_framework-sdkextensions

We don't want this dex installed or depended on by platform modules.

Bug: 158284983
Test: atest sdkextensions_e2e_test
Change-Id: I9dcadfd2e552966f097ebf4f08cd66761a9de8b9
Merged-In: I9dcadfd2e552966f097ebf4f08cd66761a9de8b9
(cherry picked from commit c7a0b4273eb291b5250bf38b016b1b98b1cd0e9b)
1 file changed