Azure Functions: Durable Functions Netherite backend end of support

Netherite is one of several backend providers supported by Durable Functions, and it is no longer supported after 31 Mar 2028. Function apps using Netherite continue to work after that date but are no longer supported. Support cases can no longer be opened for Netherite-enabled apps.

1. For function apps that need the higher throughput previously offered by Netherite, read the durable task scheduler documentation and evaluate it for the workloads that use Netherite.
2. When the announcement was published, the durable task scheduler was in public preview. Microsoft stated that it becomes generally available before the Netherite end of support date, to allow time for migration. Microsoft recommends waiting until it is generally available before using it for production workloads.