[Dev UI] Enable Zoneless Change Detection (Global Config)

[MichaelDoyle]

Description

This is the final step in the zoneless migration (Parent Issue: #4106). Once all components are migrated to OnPush and tests are updated, we will flip the global switch to enable zoneless change detection.

Tasks

1. Enable Provider:
   In src/app/app.config.ts, add provideZonelessChangeDetection() to the providers list.

2. Remove Polyfill:
   In angular.json, remove "zone.js" from the polyfills array under the build target.

3. Update Test Setup:
   In src/app/testing/jest-setup.ts, remove setupZoneTestEnv() and configure the test environment for zoneless execution.

4. Verify 3rd Party Libraries:
   Pay special attention to the following libraries during manual verification to ensure they update the UI correctly without Zone.js:

   • ngx-markdown
   • @materia-ui/ngx-monaco-editor
   • ngx-json-treeview

5. Verify Application:
   Run the application and ensure change detection works as expected without zone.js.

6. Verify Tests:
   Run all tests to ensure the suite passes in a zoneless environment.