Changes to Analyze Actions Contract

added the new optional request property character/model_version

added the optional property effective_prompt/resolved_model_version to the response with the 200 status

added the new optional request property character/language_hardening_mode

added the new optional request property character/language_hardening_text

added the new optional request property capabilities

added the new optional request property runtime_context/anyOf[subschema #1: ActionsPromptRuntimeContext]/vision_prompt_mode

added the required property system_generated_contract to the response with the 200 status

endpoint added