Fix Lepton Blazor toolbar dropdown alignment #23015
BackRelated to abpframework/abp#26262
The language and user menus in the Lepton toolbar were not end aligned, because BarDropdown has no EndAligned parameter. The user menu was cut off by the screen edge.
Use Dropdown EndAligned in MainHeaderToolbarLanguageSwitch and MainHeaderToolbarUserMenu. In blazorise-dropdown.css, reset the menu offsets when the toolbar is collapsed, so small screens keep the old position.