jsonpath-plus expects browser to use ESM

This library will no longer work in browser `jsonpath-plus` serves ESM when being used in the browser, however, this package only supports commonJS, so we get into a situation where if we are running this in a browser (vitest) we get an error when json-rules-engine tries to load jsonpath-plus

Start by reproducing the browser/Vitest failure when json-rules-engine loads jsonpath-plus, then trace how that dependency is loaded. Done means the rules engine can load and run in a browser without the reported ESM/CommonJS error; the issue names no files or tests to guide the change.

Written by the indexing model from the issue text.