MDL-81402 course: Add sectionnum to cm export

course/format/classes/output/local/content/cm.php

@@ -122,6 +122,7 @@ class cm implements named_templatable, renderable {
             'classlist' => [],
             'cmid' => $mod->id,
             'editing' => $PAGE->user_is_editing(),
+            'sectionnum' => $this->section->section,
         ];
 
         // Add partial data segments.

course/templates/activitychooserbuttonactivity.mustache

@@ -27,11 +27,11 @@
     Example context (json):
     {
         "id": 0,
-        "num": 1,
+        "sectionnum": 1,
         "sectionreturn": 5
     }
 }}
 <button class="btn btn-link text-decoration-none section-modchooser section-modchooser-link activity-add d-flex align-items-center activitychooser-button"
-     data-action="open-chooser" data-sectionid="{{num}}" data-sectionreturnid="{{sectionreturn}}" data-beforemod="{{id}}" aria-label="{{#str}}insertresourceoractivitybefore, core, { "activityname": {{#quote}} {{activityname}} {{/quote}} } {{/str}}" tabindex="0">
+     data-action="open-chooser" data-sectionid="{{sectionnum}}" data-sectionreturnid="{{sectionreturn}}" data-beforemod="{{id}}" aria-label="{{#str}}insertresourceoractivitybefore, core, { "activityname": {{#quote}} {{activityname}} {{/quote}} } {{/str}}" tabindex="0">
      {{#pix}} t/add, core {{/pix}}
 </button>