PIPE-2738: Remove redundant `Returns1 sections and add missing type hints in CLI tasks
- Stripped duplicate `Returns:` sections from 42 wrapped CLI task docstrings across the `h`, `hif`, `hifa`, and `hsdn` modules. This ensures Sphinx's `autodoc_typehints='description'` generates exactly one "Return type:" entry per task without duplication.
- Added missing Python return type hints (`-> launcher.Context` and `-> None`) to the signatures of unwrapped standard functions (`h_resume`, `h_weblog`, and `h_show_calstate`) so their return types are correctly scraped and populated in the HTML documentation.
