Fix mypy type-checking errors - Remove unused type ignore comments from multiple files - Fix TypedDict type mismatch in browser_env/actions.py by ensuring arguments are converted to strings - Install missing type stubs (types-requests, types-tqdm) All core packages (browser_env, agent, evaluation_harness, llms, tests) now pass mypy checks. Co-authored-by: openhands <openhands@all-hands.dev>

fix type errors