Add a test case to check ptrace behavior in the case when vector extension is supported by the system, but vector context is not yet enabled for the traced process. Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com> Reviewed-by: Andy Chiu <andybnac@gmail.com> Tested-by: Andy Chiu <andybnac@gmail.com> Link: https://patch.msgid.link/20251214163537.1054292-6-geomatsi@gmail.com [pjw@kernel.org: dropped duplicate sys/wait.h include] Signed-off-by: Paul Walmsley <pjw@kernel.org>