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.

Inizia dal report upstream e dalla richiesta di entity Python per Durable Entities v2, quindi confrontali con l'impostazione dell'host rollbackEntityOperationsOnExceptions e con il contratto gRPC o extension/protobuf. Esegui i casi elencati di mutazione, batching, errore e retry, seguiti dalla copertura end-to-end dell'host per i provider v2 supportati. Il lavoro è completato quando la semantica è verificata, oppure quando il lavoro extension/protobuf richiesto è stato identificato e collegato invece di aggiungere un comportamento esclusivo dell'SDK.