Investigate rollbackEntityOperationsOnExceptions semantics for Durable Entities

Upstream report: https://github.com/Azure/azure-functions-durable-python/issues/274

Investigate whether azure-functions-durable v2 entities honor the host rollbackEntityOperationsOnExceptions setting. This may require a Durable Functions extension or wire-contract change if the setting is not available in the Python entity request.

Investigation goals

• Verify omitted/default and explicit true: set, delete, create, and in-place mutation followed by an exception are rolled back.
• Verify explicit false: those mutations remain applied.
• Verify that, in a multi-operation batch, only the failed operation is rolled back and successful operations before and after it remain applied.
• Verify callers observe the operation failure without an unintended retry.
• Add end-to-end host coverage for supported v2 providers.
• If the gRPC or extension contract cannot carry this option, identify and link the required extension/protobuf work rather than implementing SDK-only behavior.

Comece pelo relatório upstream e pela solicitação de entidade Python para Durable Entities v2; depois, compare-os com a configuração do host rollbackEntityOperationsOnExceptions e com o contrato gRPC ou extension/protobuf. Exercite os casos listados de mutação, batching, falha e retry, seguidos pela cobertura end-to-end do host para os provedores v2 compatíveis. Está concluído quando a semântica tiver sido verificada ou quando o trabalho necessário de extension/protobuf tiver sido identificado e vinculado, em vez de adicionar comportamento exclusivo do SDK.