Disable Settings agentic search experience

Settings agentic experience enhances search results within the Settings app by enabling natural language. When activated, it utilizes an AI model to provide intelligent Settings search suggestions. This policy setting allows you to determine whether Settings agentic search experience is available for users on their device. When the policy is enabled, the Settings agentic search experience is disabled, limiting search results to statically indexed searches and semantic searches. When the policy is disabled, users will have Settings agentic search experience available on their device.