Python: [Breaking] Upgrade to azure-ai-projects 2.0+ (#4536)

* Prepare azure-ai-projects 2.0 GA compatibility

Add allow_preview support for internal AIProjectClient creation, keep backward compatibility for renamed SDK model classes, and align Azure AI/core paths and tests for GA validation workflows.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* upgrade to ai-project==2.0.0

* Python: remove azure-ai-projects keyword-guard paths

Assume azure-ai-projects 2.0+ in Azure AI client/provider/responses code paths by removing _supports_keyword_argument gating and related fallback branching.

Also fix pyright typing in FoundryMemoryProvider memory store calls by using ResponseInputItemParam-typed items.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* check fixes

* Python: remove unsupported foundry_features option

Drop foundry_features from Azure AI client and provider surfaces because azure-ai-projects 2.0.0 does not expose that create_version parameter.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* Python: add allow_preview to Foundry memory provider

Propagate allow_preview when FoundryMemoryProvider constructs an AIProjectClient and update tests accordingly.

Also finish wiring allow_preview through AzureAIClient-facing surfaces and related docs.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

* aligning docstrings

* udpated lock

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

python/packages/declarative/agent_framework_declarative/_workflows/_executors_tools.py

@@ -15,11 +15,10 @@ import json
 import logging
 import uuid
 from abc import abstractmethod
-from collections.abc import Mapping
+from collections.abc import Callable, Mapping
 from dataclasses import dataclass, field
 from inspect import isawaitable
 from typing import Any, cast
-from collections.abc import Callable
 
 from agent_framework import (
     Content,