selftests/bpf: Disable newly-added 'owner' field test until refcount re-enabled

The test added in previous patch will fail with bpf_refcount_acquire
disabled. Until all races are fixed and bpf_refcount_acquire is
re-enabled on bpf-next, disable the test so CI doesn't complain.

Signed-off-by: Dave Marchevsky <davemarchevsky@fb.com>
Link: https://lore.kernel.org/r/20230718083813.3416104-6-davemarchevsky@fb.com


Signed-off-by: Alexei Starovoitov <ast@kernel.org>