Component subscription tests

Author: javiercn

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

@@ -99,7 +99,7 @@ public PersistentValueProviderComponentSubscription(
     [UnconditionalSuppressMessage("Trimming", "IL2026:Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code", Justification = "OpenComponent already has the right set of attributes")]
     [UnconditionalSuppressMessage("Trimming", "IL2072:Target parameter argument does not satisfy 'DynamicallyAccessedMembersAttribute' in call to target method. The return value of the source method does not have matching annotations.", Justification = "OpenComponent already has the right set of attributes")]
     [UnconditionalSuppressMessage("Trimming", "IL2077:'type' argument does not satisfy 'DynamicallyAccessedMemberTypes' in call to target method. The source field does not have matching annotations.", Justification = "Property types on components are preserved through other means.")]
-    private void RestoreProperty()
+    internal void RestoreProperty()
     {
         var skipNotifications = _hasPendingInitialValue;
         if (ReferenceEquals(_lastValue, _uninitializedValue) && !_hasPendingInitialValue)