MDL-64786 analytics: Add missing parameter to model::export() method

All methods that export an object to be rendered via a template, must
have the instance of a renderer available.

admin/tool/analytics/classes/output/models_list.php

@@ -84,7 +84,7 @@ class models_list implements \renderable, \templatable {
 
         $data->models = array();
         foreach ($this->models as $model) {
-            $modeldata = $model->export();
+            $modeldata = $model->export($output);
 
             // Check if there is a help icon for the target to show.
             $identifier = $modeldata->target->get_identifier();

analytics/classes/model.php

@@ -1438,9 +1438,10 @@ class model {
     /**
      * Exports the model data for displaying it in a template.
      *
+     * @param \renderer_base $output The renderer to use for exporting
      * @return \stdClass
      */
-    public function export() {
+    public function export(\renderer_base $output) {
 
         \core_analytics\manager::check_can_manage_models();
 

analytics/upgrade.txt

@@ -15,6 +15,7 @@ information provided here is intended especially for developers.
   by updating the lib/db/analytics.php file and bumping the core version.
 * \core_analytics\model::execute_prediction_callbacks now returns an array with both sample's contexts
   and the prediction records.
+* \core_analytics\model::export() now expects the renderer instance as an argument.
 * Time splitting methods:
     * \core_analytics\local\time_splitting\base::append_rangeindex and
       \core_analytics\local\time_splitting\base::infer_sample_info are now marked as final and can not