Enable content sharing with Google AI Mode and Lens integrations

This policy controls sharing of page and file content with Google AI Mode and Lens through Google Chrome side panel or tabs. Note that this policy doesn't affect Google AI Mode on the web. It only controls how users can share information with it when using Google Chrome. 0/unset = users can share page or file content with Google AI Mode. 1 = users cannot share page or file content with Google AI Mode. The entry points for sharing context and the side panel will be disabled or hidden. This policy will be ignored when Google Search is not users' default search engine as the feature is disabled. This policy is independent of the AIModeSettings policy. The AIModeSettings policy only controls entry points on omnibox or NTP search box, while this policy controls context sharing through side panel or tabs. This policy also doesn't control Google Gemini integration which can be disabled by GeminiSettings. If this policy is unset, its behavior is determined by the GenAiDefaultSettings policy. For more information on data handling for generative AI features, please see https://support.google.com/chrome/a?p=generative_ai_settings.