fix: Implement missing run_moderation method in PromptGuardSafetyImpl#3101

ashwinb merged 1 commit intollamastack:mainllamastack/llama-stack:mainfrom

Elbehery:20250812_fix_PromptGuardSafetyImpl_abstract_class_instantiateElbehery/llama-stack:20250812_fix_PromptGuardSafetyImpl_abstract_class_instantiateCopy head branch name to clipboard