[Run] UI improvements + ability to show/hide plugins overview panel (#30258)

* Add setting to show/hide plugin keywords in Run

* Increasing fontsize and spacing

* Removing tooltip prefixes

* Tweaks and making sure the window gets smaller when plugins overview is disabled

* Label updates for Settings

* Updating UI

* Fix number of results height

* Centering textbox

* Adding tooltip to keyword

* Selection highlight + dark theme tweaks

* Change order and fix CI

* Update expect.txt

* Add option to select only non-global plugins preview

* Fix typos

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Co-authored-by: Stefan Markovic <stefan@janeasystems.com>

src/settings-ui/Settings.UI.UnitTests/ViewModelTests/PowerLauncherViewModelTest.cs

@@ -82,6 +82,7 @@ namespace ViewModelTests
             Assert.AreEqual(originalSettings.Properties.SearchTypePreference, viewModel.SearchTypePreference);
             Assert.AreEqual(originalSettings.Properties.GenerateThumbnailsFromFiles, viewModel.GenerateThumbnailsFromFiles);
             Assert.AreEqual(originalSettings.Properties.UsePinyin, viewModel.UsePinyin);
+            Assert.AreEqual(originalSettings.Properties.ShowPluginsOverview, viewModel.ShowPluginsOverviewIndex);
 
             // Verify that the stub file was used
             var expectedCallCount = 2;  // once via the view model, and once by the test (GetSettings<T>)