Revert changes related to basename check for local libraries (#2345)

## Changes

These changes break the use of non-local libraries (such as PyPI
libraries).

This reverts the set so we can cut a patch release and take a closer
look later.

Original PRs are #2297 and #2341.

Issue reported in #2343.

## Tests

Manually confirmed that a bundle with PyPI package in libraries now
deploys fine.

Author: pietern