Enable VNDK for aosp_x86 and aosp_x86_64

When VNDK version is not enabled, libminijail.so are built under
system directory. It is not found in GSI, though.

Enable VNDK version causes it to be built under vendor directory.

Bug: 69395141
Test: Both of the following 2 products can boot to home screen.
    $ lunch aosp_x86-userdebug; m -j; emulator
    $ lunch aosp_x86_64-userdebug; m -j; emulator

Change-Id: I6356ffe4a806b3d8fc79057bf772d139209a5f11
Merged-In: I6356ffe4a806b3d8fc79057bf772d139209a5f11
(cherry picked from commit 532d5adf)