Remove setuptools<82 constraint once pyfilesystem2 (fs) drops pkg_resources usage

Context

setuptools 82.0.0 removed pkg_resources from its distribution (see https://setuptools.pypa.io/en/stable/history.html#v82-0-0).

The fs (pyfilesystem2) package still uses pkg_resources for namespace package declarations in its __init__.py:

__import__("pkg_resources").declare_namespace(__name__)

This causes ModuleNotFoundError: No module named 'pkg_resources' whenever code imports from fs, which is used throughout the platform (e.g., lms/djangoapps/courseware/courses.py, xblocks_contrib).

Upstream tracking issue: https://github.com/PyFilesystem/pyfilesystem2/issues/577

Current Workaround

setuptools<82 was added to requirements/constraints.txt in https://github.com/openedx/openedx-platform/pull/38067 to unblock the make upgrade run.

Resolution

This constraint can be removed once pyfilesystem2 releases a new version that no longer uses pkg_resources for its namespace package declaration.

Start with requirements/constraints.txt and review the upstream pyfilesystem2 issue #577 and its release status. Once a pyfilesystem2 version no longer uses pkg_resources, remove the setuptools<82 constraint and run the make upgrade workflow to confirm dependency resolution and fs imports work without the workaround.