Fix zipfile packaging after #98103

[jaraco]

• Add zipfile and test_zipfile to list of packages. Fixes regression introduced in gh-98098: Create packages from zipfile and test_zipfile #98103.
• Restore support for py -m test.test_zipfile

[bedevere-bot]

🤖 New build scheduled with the buildbot fleet by @jaraco for commit d8be03d 🤖

If you want to schedule another build, you need to add the ":hammer: test-with-buildbots" label again.