Draft: Temporarily roll back Swagger for webpack to work

What does this MR do and why?

❗ Not for merging ❗

This is intended as a temporary fix for Fix imports for @swagger-api/apidom-reference (!147419 - merged), whereby Webpack throws the following error and refuses to shut down cleanly:

/Users/[username]/gitlab-development-kit/gitlab/node_modules/swagger-client/es/execute/index.js
Module not found: Error: Can't resolve '@swagger-api/apidom-reference/configuration/empty' in '/Users/[username]/gitlab-development-kit/gitlab/node_modules/swagger-client/es/execute'

If you get this error, you can attempt to cherry pick this MR's commit as a temporary bypass.

Troubleshooting discussion happening on Slack: https://gitlab.slack.com/archives/C2Z9A056E/p1712825364993029.

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