Don't attempt to parse different request types: fixes adding new experiences

[pvdosev]

Closes #60

The check
if request.content_type == "multipart/form-data" else request.get_json()
doesn't work, because the content type in a multipart form data request also includes the separator between the data of the form, like "multipart/form-data; boundary=------------------------vqfqxmgyrMqVTDpDiq7JrB". This changes every request.

Of course, we could parse it with some string separation, which would be pretty simple, but I thought I'd remove the json part completely since we aren't going to be accepting json data there anyway. I can re-add it if we think it's necessary, but I'd say it's easier and more straightforward like this.

This pull request, if applied along with MLH-Fellowship/orientation-project-js-24.FAL.A#24, makes the uploading of data work correctly.

[awilkescom]

Thanks @pvdosev - can you review the linter and test feedback?

[pvdosev]

Agh the test uses json

[pvdosev]

Hehe love a passing test

[hastagAB]

Looks good to me! 🚀