Address PR review comments

- Remove unused deps @backstage/filter-predicates and zod-validation-error
  from catalog-model
- Deduplicate defaultCatalogEntityModel by re-exporting from the single
  source in model/defaultCatalogEntityModel.ts
- Fix typos: "Retuns"/"epxressed", "Obviopusly", "recorsively"
- Use domain-prefixed layer ID for scaffolder template model

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Signed-off-by: Fredrik Adelöw <freben@spotify.com>

plugins/scaffolder-common/src/catalogModel.ts

@@ -23,7 +23,7 @@ import schema from './Template.v1beta3.schema.json';
  * @alpha
  */
 export const templateModelLayer = createCatalogModelLayer({
-  layerId: 'Template',
+  layerId: 'scaffolder.backstage.io/kind-template',
   builder: model => {
     model.addKind({
       group: 'scaffolder.backstage.io',