Add hidden fields to printer schema for enhanced data management

- Introduced a `hiddenFields` static property in the `printerSchema` to specify fields that should be excluded from certain operations, improving data handling and privacy.
- Updated schema structure to support better management of sensitive information.

src/database/schemas/production/printer.schema.js

@@ -101,6 +101,8 @@ const rollupConfigs = [
   },
 ];
 
+printerSchema.statics.hiddenFields = ['alerts', 'pendingSlicerUploads'];
+
 printerSchema.statics.stats = async function () {
   const results = await aggregateRollups({
     model: this,