Using uppy.setOptions({locale}) won't update locale strings in Restricter instance

[ZaDarkSide]

Initial checklist

• I understand this is a bug report and questions should be posted in the Community Forum
• I searched issues and couldn’t find anything (or linked relevant results below)

Link to runnable example

Runnable example cannot be provided codesandbox.io starter example is broken https://codesandbox.io/s/uppy-dashboard-xpxuhd?file=/src/index.js

Steps to reproduce

Consider this code

import Uppy from '@uppy/core'
import French from '@uppy/locales/lib/fr_FR.js'

const uppy = new Uppy()
uppy.setOptions({ inline: true, locale: French, restrictions: { allowedFileTypes: ['image/*'] })

Then try to upload a file that is not an image, the error message from Informer that comes from Restricter should be in French not English.

Expected behavior

The error message from Informer should be in French not English.

Actual behavior

The error message from Informer is in English, even if setOptions() call set the locale correctly.

A possible solution

This code:

uppy/packages/@uppy/core/src/Uppy.ts

Lines 604 to 610 in 8ccddce

	this.i18nInit()
	if (newOpts.locale) {
	this.iteratePlugins((plugin) => {
	plugin.setOptions(newOpts)
	})
	}

To be changed to this:

 this.i18nInit()

 // Restricter sadly hasn't a setOptions() method, so it will be needed to be reinstanciated
 this.#restricter = new Restricter<M, B>(() => this.opts, this.i18n) 

 if (newOpts.locale) { 
   this.iteratePlugins((plugin) => { 
     plugin.setOptions(newOpts) 
   }) 
 }