fix(certificates): can't load certificate related's snis config in dbless mode.

[raoxiaoyan]

Summary

This PP is to fix the problem that was caused by #13357.
The problem was recorded here.
Kong/kubernetes-ingress-controller#6370

Checklist

• The Pull Request has tests
• A changelog file has been created under changelog/unreleased/kong or skip-changelog label added on PR if changelog is unnecessary. README.md
• [na] There is a user-facing docs PR against https://github.com/Kong/docs.konghq.com - PUT DOCS PR HERE

Issue reference

KM-429

[team-gateway-bot]

Cherry-pick failed for master, because it was unable to cherry-pick the commit(s).

Please cherry-pick the changes locally.

git remote add upstream https://github.com/kong/kong-ee
git fetch upstream master
git worktree add -d .worktree/cherry-pick-13516-to-master-to-upstream upstream/master
cd .worktree/cherry-pick-13516-to-master-to-upstream
git checkout -b cherry-pick-13516-to-master-to-upstream
ancref=$(git merge-base c5566bb21c4459654e1d7d145518b63984329c22 00c5a6e15d027ffe381994711bd7a63180609a12)
git cherry-pick -x $ancref..00c5a6e15d027ffe381994711bd7a63180609a12

[team-gateway-bot]

Successfully created cherry-pick PR for master:

• https://github.com/kong/kong-ee/pull/10000