Scenario cleanup

Examples/UICatalog/Scenarios/CharacterMap/CharacterMap.cs

@@ -16,6 +16,7 @@ namespace UICatalog.Scenarios;
 [ScenarioCategory ("Controls")]
 [ScenarioCategory ("Layout")]
 [ScenarioCategory ("Scrolling")]
+[ScenarioCategory ("Unicode")]
 public class CharacterMap : Scenario
 {
     private Label? _errorLabel;

Examples/UICatalog/Scenarios/ChineseUI.cs

@@ -3,6 +3,7 @@ namespace UICatalog.Scenarios;
 
 [ScenarioMetadata ("ChineseUI", "Chinese UI")]
 [ScenarioCategory ("Text and Formatting")]
+[ScenarioCategory ("Unicode")]
 public class ChineseUI : Scenario
 {
     public override void Main ()

Examples/UICatalog/Scenarios/CombiningMarks.cs

@@ -3,6 +3,7 @@ namespace UICatalog.Scenarios;
 
 [ScenarioMetadata ("Combining Marks", "Illustrates how Unicode Combining Marks work (or don't).")]
 [ScenarioCategory ("Text and Formatting")]
+[ScenarioCategory ("Unicode")]
 public class CombiningMarks : Scenario
 {
     public override void Main ()

Examples/UICatalog/Scenarios/Dialogs.cs

@@ -5,6 +5,7 @@ namespace UICatalog.Scenarios;
 
 [ScenarioMetadata ("Dialogs", "Demonstrates how to use the Dialog and Dialog<TResult> classes")]
 [ScenarioCategory ("Dialogs")]
+[ScenarioCategory ("Runnable")]
 public class Dialogs : Scenario
 {
     private const int WIDE_CODE_POINT = '你';

Examples/UICatalog/Scenarios/RuneWidthGreaterThanOne.cs

@@ -5,9 +5,9 @@
 namespace UICatalog.Scenarios;
 
 [ScenarioMetadata ("RuneWidthGreaterThanOne", "Test rune width greater than one")]
-[ScenarioCategory ("Controls")]
 [ScenarioCategory ("Text and Formatting")]
 [ScenarioCategory ("Tests")]
+[ScenarioCategory ("Unicode")]
 public class RuneWidthGreaterThanOne : Scenario
 {
     private IApplication? _app;

Examples/UICatalog/Scenarios/Unicode.cs

@@ -6,7 +6,7 @@ namespace UICatalog.Scenarios;
 
 [ScenarioMetadata ("Unicode", "Tries to test Unicode in all controls (#204)")]
 [ScenarioCategory ("Text and Formatting")]
-[ScenarioCategory ("Controls")]
+[ScenarioCategory ("Unicode")]
 public class UnicodeInMenu : Scenario
 {
     public override void Main ()