Mark jni_zero_sample_apk_test as non-experimental

So that failures block CQ.

Bug: 326079815
Change-Id: Ib22bba7b867afc2dcbbdea93ed87e5807fe6e00a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5415415


Reviewed-by: Ben Pastene <bpastene@chromium.org>
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1281828}