feat(Bpmnjs): Ensure that the user is fully informed about the conseq…

…uences when deleting a task (#12702)

* feat(Bpmnjs): Override default action when deleting a task

frontend/packages/process-editor/src/bpmnProviders/SupportedContextPadProvider.js

@@ -4,9 +4,33 @@ class SupportedContextPadProvider {
   }
 
   getContextPadEntries() {
+    const overrideDeleteEntry = (entries) => {
+      const deleteEntry = entries['delete'];
+      entries['delete'] = {
+        ...deleteEntry,
+        action: {
+          click: function (event, element) {
+            if (element.type !== 'bpmn:Task') {
+              deleteEntry.action.click(event, element);
+              return;
+            }
+
+            const isConfirmed = confirm(
+              'Prosess-steget du vil slette kan være knyttet til en sidegruppe. Den kan inneholde visningsoppsett eller skjema du har satt opp. Hvis du sletter steget, sletter du også hele sidegruppen og alt som hører til.',
+            );
+
+            if (isConfirmed) {
+              deleteEntry.action.click(event, element);
+            }
+          },
+        },
+      };
+    };
+
     return function (entries) {
       // Should not be able to replace the entry
       delete entries['replace'];
+      overrideDeleteEntry(entries);
       return entries;
     };
   }