refactor: Make WFH internal

Author: linkdotnet

src/bunit/Extensions/WaitForHelpers/WaitForAssertionHelper.cs

@@ -3,7 +3,7 @@ namespace Bunit.Extensions.WaitForHelpers;
 /// <summary>
 /// Represents an async wait helper, that will wait for a specified time for an assertion to pass.
 /// </summary>
-public class WaitForAssertionHelper<TComponent> : WaitForHelper<object?, TComponent>
+internal class WaitForAssertionHelper<TComponent> : WaitForHelper<object?, TComponent>
 	where TComponent : IComponent
 {
 	internal const string TimeoutMessage = "The assertion did not pass within the timeout period.";

src/bunit/Extensions/WaitForHelpers/WaitForHelper.cs

@@ -8,7 +8,7 @@ namespace Bunit.Extensions.WaitForHelpers;
 /// Represents a helper class that can wait for a render notifications from a <see cref="IRenderedComponent{TComponent}"/> type,
 /// until a specific timeout is reached.
 /// </summary>
-public abstract class WaitForHelper<T, TComponent> : IDisposable
+internal abstract class WaitForHelper<T, TComponent> : IDisposable
 	where TComponent : IComponent
 {
 	private readonly TaskCompletionSource<T> checkPassedCompletionSource;

src/bunit/Extensions/WaitForHelpers/WaitForStateHelper.cs

@@ -3,7 +3,7 @@ namespace Bunit.Extensions.WaitForHelpers;
 /// <summary>
 /// Represents an async wait helper, that will wait for a specified time for a state predicate to pass.
 /// </summary>
-public class WaitForStateHelper<TComponent> : WaitForHelper<object?, TComponent>
+internal class WaitForStateHelper<TComponent> : WaitForHelper<object?, TComponent>
 	where TComponent : IComponent
 {
 	internal const string TimeoutBeforePassMessage = "The state predicate did not pass before the timeout period passed.";