Revert "Fixed issue where using the same property name in multiple samples within the same assembly broken the generator"

This reverts commit 5e10461.

Author: Arlodotexe

common/CommunityToolkit.Labs.Core.SourceGenerators/ToolkitSampleOptionGenerator.cs

@@ -17,6 +17,7 @@ namespace CommunityToolkit.Labs.Core.SourceGenerators;
 public class ToolkitSampleOptionGenerator : IIncrementalGenerator
 {
     private readonly HashSet<string> _handledPropertyNames = new();
+    private readonly HashSet<ToolkitSampleOptionBaseAttribute> _handledAttributes = new();
     private readonly HashSet<ISymbol> _handledContainingClasses = new(SymbolEqualityComparer.Default);
 
     public void Initialize(IncrementalGeneratorInitializationContext context)
@@ -59,13 +60,13 @@ public void Initialize(IncrementalGeneratorInitializationContext context)
                 ctx.AddSource($"{data.ContainingClassSymbol}.GeneratedPropertyContainer.g", propertyContainerSource);
             }
 
-            var name = $"{data.ContainingClassSymbol}.Property.{data.Attribute.Name}.g";
+            if (!_handledAttributes.Add(data.Attribute))
+                return;
 
-            if (_handledPropertyNames.Add(name))
-            {
-                var dependencyPropertySource = BuildProperty(data.ContainingClassSymbol, data.Attribute.Name, data.Attribute.TypeName, data.Type);
-                ctx.AddSource(name, dependencyPropertySource);
-            }
+            var dependencyPropertySource = BuildProperty(data.ContainingClassSymbol, data.Attribute.Name, data.Attribute.TypeName, data.Type);
+
+            if (_handledPropertyNames.Add(data.Attribute.Name))
+                ctx.AddSource($"{data.ContainingClassSymbol}.Property.{data.Attribute.Name}.g", dependencyPropertySource);
         });
 
     }
@@ -108,6 +109,7 @@ public partial class {containingClassSymbol.Name} : {typeof(IToolkitSampleGenera
                         item.PropertyChanged -= OnPropertyChanged;
                 }}
                 
+
                 if (!(value is null))
                 {{
                     foreach (var item in value)