[BUG] Flaky integ tests in InternalUsersScoreBasedPasswordRulesRestApiIntegrationTest

[cwperks]

What is the bug?

The integrationTest ci check has been having silent failures that have only been surfaced recently due to #4814 and catching the issues as part of release time testing. There are a few failing tests in InternalUsersScoreBasedPasswordRulesRestApiIntegrationTest.

> Task :integrationTest

Tests with failures:
 - org.opensearch.security.SecurityConfigurationTests.testParallelTenantPutRequests
 - org.opensearch.security.api.InternalUsersScoreBasedPasswordRulesRestApiIntegrationTest.canNotCreateUsersWithPassword
 - org.opensearch.security.api.InternalUsersScoreBasedPasswordRulesRestApiIntegrationTest.canCreateUserWithPassword
 - org.opensearch.security.api.DefaultApiAvailabilityIntegrationTest.securityConfigIsNotAvailableByDefault

Reference run: https://github.com/opensearch-project/security/actions/runs/11521949839/job/32076735911?pr=4844

Do you have any additional context?

Potentially caused by the static initialization of cluster settings in classes that subclass AbstractApiIntegrationTest