Flask-Collect distribution erroneously contains a `tests` package

The current source package and wheel on PyPI (version 1.3.2) contain a top-level "tests" package, which shouldn't be included.

It means that I can't do `pkg_resources.resource_stream("tests", "path/to/fixture")` in my own `tests` directory, as it instead picks up the installed package instead of the locally-importable `tests` package.

Inspect the packaging configuration used to build the version 1.3.2 source package and wheel, then reproduce the distribution contents locally. Verify that the top-level tests package is absent from both artifacts while Flask-Collect's intended package remains available.

Written by the indexing model from the issue text.