[Bug]: encType on Form does not include "application/json"

[binaryartifex]

What version of React Router are you using?

18.2.0

Steps to Reproduce

1. Create just a simple Form component, imported from the react-router library.
2. Observe that of all the options provided when choosing an encType, application/json is not provided.

Expected Behavior

To be able to set the encType on my Form to "application/json"

Actual Behavior

The encType property within the SubmitOptions type is of type FormEncType. This type also includes the "application/json" type. However for some reason this option does not propagate to a react router Form.

[brophdawg11]

This is by design because the <Form> component is intended to progressively enhance <form> and be able to fallback to a working version when JS is disabled - and <form> doesn't support application/json. By using application/json you're making the choice that your app will not work without/before JS (which is a fine decision if needed!) - but you then just need to do it via the JS-required API of onClick/submit.