Description of the bug

If attributes are documented in the __init__ method (see class below), their types are missing after rendering (see the screenshot).

class MolecularFamily:
    def __init__(self, family_id: str):
        """Class to model molecular family.

        Args:
            family_id: Unique id for the molecular family.

        Attributes:
            family_id: Unique id for the molecular family.
            spectra_ids: Set of spectrum ids in the molecular family.
        """
        self.family_id: str = family_id
        self.spectra_ids: set[str] = set()
        self._spectra: set[Spectrum] = set()
        self._strains: StrainCollection = StrainCollection()

screenshot

To Reproduce

WRITE MRE / INSTRUCTIONS HERE

Full traceback

PASTE TRACEBACK HERE

Expected behavior

Not matter where attributes are documented (module level, class level or __init__ method), their types should be extracted and rendered properly.

Environment information

python -m mkdocstrings_handlers.python.debug  # | xclip -selection clipboard

• System: macOS-14.4.1-arm64-arm-64bit
• Python: cpython 3.9.18
• Environment variables:
• Installed packages:
  • mkdocs v1.5.3
  • mkdocstrings v0.24.1
  • mkdocstrings-python v1.9.0
  • griffe v0.42.0

Additional context

mkdocs.yml

plugins
- mkdocstrings:
    handlers:
      python:
        options:
          members_order: source
          filters: ["!^_"]
          merge_init_into_class: true
          show_if_no_docstring: true
          show_root_heading: true
          show_root_full_path: false
          show_signature_annotations: true
          signature_crossrefs: true
          separate_signature: true
          show_symbol_type_heading: true
          show_symbol_type_toc: true