Add Connected Agent Step and tool call classes. (Azure#51733)

* Add Connected Agent Step and tool call classes.

* Regenerate code

* Generate code from main.

Author: nick863

sdk/ai/Azure.AI.Agents.Persistent/CHANGELOG.md

@@ -11,6 +11,8 @@
 ### Bugs Fixed
 
 - Fixed the deserialization issue, when agent service returns the customized lists of trusted and requiring authentication MCP tools.
+- Added classes for deserialization of `RunStepDeltaAzureAISearchToolCall`, `RunStepDeltaOpenAPIToolCall` and `RunStepDeltaDeepResearchToolCall`, required to get the real time updates when Azure AI Search, OpenAPI or Deep Research tools are being used during streaming scenarios.
+- Added `RunStepConnectedAgentToolCall` and `RunStepDeltaConnectedAgentToolCall` for deserializing Connected Agent tool updates in non-streaming and streaming scenarios.
 
 ### Other Changes
 

sdk/ai/Azure.AI.Agents.Persistent/api/Azure.AI.Agents.Persistent.net8.0.cs

@@ -2,5 +2,5 @@
   "AssetsRepo": "Azure/azure-sdk-assets",
   "AssetsRepoPrefixPath": "net",
   "TagPrefix": "net/ai/Azure.AI.Agents.Persistent",
-  "Tag": "net/ai/Azure.AI.Agents.Persistent_d749498f8a"
+  "Tag": "net/ai/Azure.AI.Agents.Persistent_e88fa3b05d"
 }