Added the `@rendermode InteractiveWebAssembly` directive to
`IndexPage.razor` to enable interactive WebAssembly rendering.
Included a `<link>` element to reference the `blazing-berry.bs5.min.css`
stylesheet from the `DevExpress.Blazor.Themes` content folder to
apply the "blazing-berry" theme for enhanced styling.
The `@rendermode InteractiveWebAssembly` directive was removed from `IndexPage.razor` to simplify the page setup.
Additionally, the `HomePageDescription` constant was updated to replace improperly encoded characters with their correct Unicode equivalents. This ensures proper rendering of German umlauts and special characters in the text.
