[Documentation] Add a troubleshooting section at certificate-credentials landing page

[gladjohn]

AADSTS700024: Client assertion is not within its valid time range. Current time: 2024-10-02T22:05:03.6755165Z, assertion valid from 1970-01-01T00:00:00.0000000Z, expiry time of assertion 2024-10-02T21:30:53.0000000Z. Review the documentation at https://learn.microsoft.com/entra/identity-platform/certificate-credentials

This error can occur when network latency or infrastructure issues cause JWT assertions to expire before they reach ESTS.

We already have a page covering https://learn.microsoft.com/en-us/entra/msal/dotnet/advanced/high-availability

Would be good to add a troubleshooting section on identity-platform/certificate-credentials (landing page) and link it to the advanced/high-availability page. This documentation update will assist developers in high-demand environments, ensuring better performance and fewer authentication failures.