fix: Add missing mock for getMappableBaseModelsDynamic in tests (#854)

- Add getMappableBaseModelsDynamic to constants.js mocks in test files
- Remove refs/enums.json temporary file from repository

Fixes test failures introduced in previous commit.

tests/frontend/managers/settingsManager.library.test.js

@@ -42,6 +42,7 @@ vi.mock('../../../static/js/utils/constants.js', () => ({
         checkpoint: 'base, guide',
         embedding: 'hint',
     },
+    getMappableBaseModelsDynamic: () => [],
 }));
 
 vi.mock('../../../static/js/utils/i18nHelpers.js', () => ({