Update src/Components/Components/src/PersistentState/PersistentValueProviderComponentSubscription.cs

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: javiercn

src/Components/Components/src/PersistentState/PersistentValueProviderComponentSubscription.cs

@@ -16,7 +16,8 @@ internal partial class PersistentValueProviderComponentSubscription : IDisposabl
 {
     private static readonly ConcurrentDictionary<(Type, string), PropertyGetter> _propertyGetterCache = new();
     private static readonly ConcurrentDictionary<Type, IPersistentComponentStateSerializer?> _serializerCache = new();
-    private static readonly object _uninitializedValue = new();
+    // Sentinel value used to indicate that _lastValue has not been initialized.
+    private static readonly object _uninitializedSentinel = new();
 
     private readonly PersistentComponentState _state;
     private readonly ComponentState _subscriber;