Prevent query params from being encoded in Inertia

I have a form that submits a get request to filter some data. The form has array values. I want the array values to be brackets in the url, but they are getting encoded.

Expected

'https://example.test/?foo[]=1&foo[]=2'

Result

'https://example.test/?foo%5B0%5D=1&foo%5B1%5D=2'

I've tried using axios.interceptors, but it's still being encoded.

import qs from 'qs'
import axios from 'axios'

axios.interceptors.request.use(
    function (config) {
        let url = new URL(config.url)
        url.search = qs.stringify(qs.parse(url.search), { 
            arrayFormat: 'brackets', encode: false 
        })
        config.url = url.href
	    // console.log(config.url) = https://example.test/?foo[]=1&foo[]=2
        return config
    }
);

At this point I have no idea what is encoding the url.

Is it a chrome thing, a vite thing, axios, inertia?

Any help would be great.