Pass document chooser URL to widget via data attribute instead of chooserUrls

wagtail/documents/static_src/wagtaildocs/js/document-chooser.js

@@ -6,7 +6,7 @@ function createDocumentChooser(id) {
 
     $('.action-choose', chooserElement).on('click', function() {
         ModalWorkflow({
-            url: window.chooserUrls.documentChooser,
+            url: chooserElement.data('chooserUrl'),
             onload: DOCUMENT_CHOOSER_MODAL_ONLOAD_HANDLERS,
             responses: {
                 documentChosen: function(docData) {

wagtail/documents/templates/wagtaildocs/widgets/document_chooser.html

@@ -1,5 +1,6 @@
 {% extends "wagtailadmin/widgets/chooser.html" %}
 {% block chooser_class %}document-chooser{% endblock %}
+{% block chooser_attributes %}data-chooser-url="{% url "wagtaildocs:chooser" %}"{% endblock %}
 
 {% block chosen_state_view %}
     <span class="title">{{ document.title }}</span>