Fix security eui memory table warnings

[JuanGarriuz]

Description

This PR fixes the console warning related to invalid props supplied to EuiInMemoryTable

Issues Resolved

• https://github.com/wazuh/wazuh-dashboard-plugins/issues/6693

Evidence

Test

• [ ] Go to Server management > Security
• [ ] Change between Roles and Policies tabs
• [ ] This console warning mustn't be rendered

Check List

• [ ] All tests pass
  • [ ] yarn test:jest
• [ ] New functionality includes testing.
• [ ] New functionality has been documented.
• [ ] Update CHANGELOG.md
• [ ] Commits are signed per the DCO using --signoff