Python: import fix for azure ai search settings in chat (#6562)

### Motivation and Context

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Fix for an issue where Azure AI search packages where needed for core
behavior.

### Description

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### Contribution Checklist

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- [x] The code builds clean without any errors or warnings
- [x] The PR follows the [SK Contribution
Guidelines](https:/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https:/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [x] All unit tests pass, and I have added new tests where possible
- [x] I didn't break anyone 😄

python/semantic_kernel/connectors/ai/open_ai/prompt_execution_settings/azure_chat_prompt_execution_settings.py

@@ -1,7 +1,7 @@
 # Copyright (c) Microsoft. All rights reserved.
 
 import logging
-from typing import Annotated, Any, Literal, Union
+from typing import TYPE_CHECKING, Annotated, Any, Literal, Union
 
 from pydantic import AliasGenerator, ConfigDict, Field
 from pydantic.alias_generators import to_camel, to_snake
@@ -10,9 +10,11 @@
 from semantic_kernel.connectors.ai.open_ai.prompt_execution_settings.open_ai_prompt_execution_settings import (
  OpenAIChatPromptExecutionSettings,
 )
-from semantic_kernel.connectors.memory.azure_cognitive_search.azure_ai_search_settings import AzureAISearchSettings
 from semantic_kernel.kernel_pydantic import KernelBaseModel
 
+if TYPE_CHECKING:
+ from semantic_kernel.connectors.memory.azure_cognitive_search.azure_ai_search_settings import AzureAISearchSettings
+
 logger = logging.getLogger(__name__)
 
 
@@ -86,7 +88,7 @@ class AzureAISearchDataSource(AzureChatRequestBase):
  parameters: Annotated[dict, AzureAISearchDataSourceParameters]
 
  @classmethod
- def from_azure_ai_search_settings(cls, azure_ai_search_settings: AzureAISearchSettings, **kwargs: Any):
+ def from_azure_ai_search_settings(cls, azure_ai_search_settings: "AzureAISearchSettings", **kwargs: Any):
  """Create an instance from Azure AI Search settings."""
  kwargs["parameters"] = {
  "endpoint": str(azure_ai_search_settings.endpoint),