Temporarily mark ArraysObjc test unsupported for watchsimulator-i386.
Earlier, I accidentally marked Arrays.swift.gyb, however the test that
is failing is ArraysObjc.swift.gyb.
(cherry picked from commit c53d0eb273f7f9b62cd543106353bb1687db3cd9)
(cherry picked from commit 5343fdc0aa1f05f96cb4544a19b19e978ce78e5c)