chore(mypy): fix type hints for inline provider files#5399

Elbehery wants to merge 2 commits intollamastack:mainllamastack/llama-stack:mainfrom

Elbehery:20260401_add_type_hints_cli_moduleElbehery/llama-stack:20260401_add_type_hints_cli_moduleCopy head branch name to clipboard