fix: scaffolder total query

fixes scaffolder list error with postgres: error: select count("tasks"."id")
as "count" from "tasks" order by "created_at" desc - column
"tasks.created_at" must appear in the GROUP BY clause or be used
in an aggregate function

Signed-off-by: Heikki Hellgren <heikki.hellgren@op.fi>

.changeset/forty-spoons-burn.md

@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-scaffolder-backend': patch
+---
+
+Fix tasks listing with postgres

plugins/scaffolder-backend/src/scaffolder/tasks/DatabaseTaskStore.ts

@@ -213,6 +213,9 @@ export class DatabaseTaskStore implements TaskStore {
       queryBuilder.whereIn('status', [...new Set(arr)]);
     }
 
+    const countQuery = queryBuilder.clone();
+    countQuery.count('tasks.id', { as: 'count' });
+
     if (order) {
       order.forEach(f => {
         queryBuilder.orderBy(f.field, f.order);
@@ -221,9 +224,6 @@ export class DatabaseTaskStore implements TaskStore {
       queryBuilder.orderBy('created_at', 'desc');
     }
 
-    const countQuery = queryBuilder.clone();
-    countQuery.count('tasks.id', { as: 'count' });
-
     if (pagination?.limit !== undefined) {
       queryBuilder.limit(pagination.limit);
     }