Karen

**Describe the bug** In #874 a fix is done so that when there is only 1 tab left, it disables the drag and reordering. This is not the ideal "northstar"...

Refactor Codebase

4

Refactor WinUI-Gallery codebase: ```[tasklist] ### Tasks - [ ] Remove unused code - [x] remove outdated ThemeResources - [ ] Proper xaml formatting - [x] Proper class name / namespaces...

Complete writing comprehensive automation tests

3

```[tasklist] ### Tasks - [x] Accessibility test passes for each page - [x] Navigate to each page and scroll to the end (to catch any crash style regression) - [...

Internal Bug [49424052](https://microsoft.visualstudio.com/OS/_workitems/edit/49424052) ```[tasklist] ### Tasks - [ ] https://github.com/microsoft/WinUI-Gallery/issues/1025 - [ ] https://github.com/microsoft/WinUI-Gallery/issues/110 - [ ] https://github.com/microsoft/WinUI-Gallery/issues/1340 ```

Remove DataGrid Page

2

### Which version of the app? WinUI 3 Gallery ### Description #1454 ### Screenshots _No response_ ### Windows version _No response_ ### Additional context _No response_