Fix deprecated conda._vendor.distro import in `conda_interface.py

[lrandersson]

The file constructor/conda_interface.py: imports distro from conda._vendor, which is deprecated and slated for removal in conda 26.3 the existing try/except ImportError silently swallows the failure, leaving distro = None). This means preconda.py's linux_distribution() info silently stops being collected once conda drops the vendored module, with no visible error.

This is probably resolved by adding the package distro and making necessary changes to account for the additional package.