[O2B-1480] Add back 'Created At' column. Use 'visible' param to hide.

Author: isaachilly

lib/public/views/Environments/ActiveColumns/environmentsActiveColumns.js

@@ -69,6 +69,13 @@ export const environmentsActiveColumns = {
         size: 'w-10',
         format: (timestamp) => formatTimestamp(timestamp, false),
     },
+    createdAt: {
+        name: 'Created At',
+        visible: false,
+        sortable: false,
+        size: 'w-10',
+        format: (timestamp) => formatTimestamp(timestamp, false),
+    },
     status: {
         name: 'Current Status',
         visible: true,