reticulate 1.40.0

• The S3 classes for some (rarely encountered) Python objects have changed.
  Only Python objects with non-standard __module__ values are affected.
  If a Python object’s parent class’s __module__ attribute does not resolve to a string,
  reticulate:

  • Attempts to resolve it from the class's class, if it's a metaclass.
  • If no string can be resolved, reticulate no longer implicitly prepends
    'python.builtin.' as the class prefix, instead it uses just the __name__.
    (See #1686 for more context)

• Added support for Python 3.13. Note that Python 3.13 removed support
  for classmethod descriptors, which may affect the S3 class of
  some Python objects that use metaclass properties to resolve a class’s
  __module__ or __name__ attribute. (#1686, #1698)

• py_is_null_xptr() and [[ now load delayed modules (#1688).

• Fixed error when attempting to use a python venv created with uv (#1678)

• Resolved an issue where py_discover_config() attempted to detect
  Windows App Store Python installations. These are now excluded from
  discovery by both py_discover_config() and virtualenv_starter() (#1656, #1673).

• Fixed an error when converting an empty NumPy char array to R (#1662).

• Fixed an error when using reticulate with radian (#1668, #1670).

• Fixed a segfault encountered when running the Python session finalizer (#1663, #1664).

• Resolved a segfault in RStudio when rapidly switching between
  R and Python chunks in a Quarto document (#1665).

• Improved behavior when the conda binary used to create an environment
  cannot be resolved (contributed by @tl-hbk, #1654, #1659).

• Added Positron support for the Variables Pane and repl_python()
  (#1692, #1641, #1648, #1658, #1681, #1687).