Fix `Auth::SamlGroupSyncWorker` flaky tests

What does this MR do and why?

Resolves

• [Test] ee/spec/workers/auth/saml_group_sync_wor... (#446163 - closed)
• [Test] ee/spec/workers/auth/saml_group_sync_wor... (#446161 - closed)
• [Test] ee/spec/workers/auth/saml_group_sync_wor... (#446159 - closed)

Closes MRs

• Quarantine a flaky test (!168464 - closed)
• Quarantine a flaky test (!168465 - closed)
• Quarantine a flaky test (!168467 - closed)

manage_group_ids parameter is set in https://gitlab.com/gitlab-org/gitlab/-/blob/a066ca306c6e61e052fd845a18896ae842c89efc/ee/app/workers/system_access/base_global_group_sync_worker.rb#L20. Since we use Group.with_saml_group_links.select(:id, 'traversal_ids[1] as root_id') SQL query that does not guarantee order of manage_group_ids values, it leads to specs flakiness because the specs assertions assume ordered list of manage_group_ids. This MR fixes those assertions to ignore order of values within manage_group_ids to eliminate those spec flakiness. That change does not decrease the test coverage.

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