Generate full_target from the exportable stubs

full_target is the SDK jar file of the stubs. Instead of setting its
value as the classes.jar file of the everything stubs, this change set its
value as the classes.jar file of the exportable stubs.

Test: patch in git_main, lunch aosp_arm-ap31-eng && m sdk dist and inspect that the disabled apis are not included
Bug: 323261972
Change-Id: Ib82e1f0a88adbb699d93014487779f7f2da24a5a
1 file changed