Replace usages of java.security.AccessController with org.opensearch.secure_sm.AccessController

[cwperks]

Description

This PR replaces all usages of java.security.AccessController with its replacement org.opensearch.secure_sm.AccessController

Related Issues

Related to opensearch-project/OpenSearch#18339

Check List

• New functionality includes testing.
• New functionality has been documented.
• API changes companion pull request created.
• Commits are signed per the DCO using --signoff.
• Public documentation issue/PR created.

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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