* When the media-type is changed, there is a new `onChangeMediaType` method to handle actions.
* If target schema properties key/value pairs does NOT equals current schema properties, clear the requestBodyValue, try-it-out request/response and validation params.
* If target schema properties key/value pairs DOES equals current schema properties, do not change or re-render schema properties
* oas3Selector `validateShallowRequired` now also validates required keys against target media-type
Fixes#6201, #6250, #6476
* config(jest): updated setup
* config(jest): update testMatch to include jsx files
* config(jest): add transformIgnorePatterns
* config(jest): update ignore files that do not work in jest yet
* config: add test:unit-jest to test script
* fix(jest): lint with eslint-plugin-jest
* refactor(jest): move unit test directory
* refactor(mocha): restore mocha tests that fail in jest
* docs(jest): update helpful scripts with test:unit-jest
