Implement dispose pattern for InputFile

src/Components/Web/src/Forms/InputFile.cs

@@ -96,8 +96,20 @@ Task IInputFileJsCallbacks.NotifyChange(BrowserFile[] files)
         return OnChange.InvokeAsync(new InputFileChangeEventArgs(files));
     }
 
+    /// <summary>
+    /// Releases the resources used by the <see cref="InputFile"/> component.
+    /// </summary>
+    /// <param name="disposing"><see langword="true"/> if called within <see cref="IDisposable.Dispose"/>.</param>
+    protected virtual void Dispose(bool disposing)
+    {
+        if (disposing)
+        {
+            _jsCallbacksRelay?.Dispose();
+        }
+    }
+
     void IDisposable.Dispose()
     {
-        _jsCallbacksRelay?.Dispose();
+        Dispose(disposing: true);
     }
 }

src/Components/Web/src/PublicAPI.Unshipped.txt

@@ -70,3 +70,4 @@ Microsoft.AspNetCore.Components.Web.Media.MediaSource.MediaSource(byte[]! data,
 Microsoft.AspNetCore.Components.Web.Media.MediaSource.MediaSource(System.IO.Stream! stream, string! mimeType, string! cacheKey) -> void
 Microsoft.AspNetCore.Components.Web.Media.MediaSource.MimeType.get -> string!
 Microsoft.AspNetCore.Components.Web.Media.MediaSource.Stream.get -> System.IO.Stream!
+virtual Microsoft.AspNetCore.Components.Forms.InputFile.Dispose(bool disposing) -> void

src/Components/Web/test/Forms/InputFileTest.cs

@@ -0,0 +1,40 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+namespace Microsoft.AspNetCore.Components.Forms;
+
+public class InputFileTest
+{
+    [Fact]
+    public void DerivedClass_CanOverrideDisposeMethod()
+    {
+        // Arrange
+        var disposed = false;
+        var derivedInputFile = new DerivedInputFile(() => disposed = true);
+
+        // Act
+        ((IDisposable)derivedInputFile).Dispose();
+
+        // Assert
+        Assert.True(disposed, "Derived class Dispose(bool) method should be called");
+    }
+
+    private class DerivedInputFile : InputFile
+    {
+        private readonly Action _onDispose;
+
+        public DerivedInputFile(Action onDispose)
+        {
+            _onDispose = onDispose;
+        }
+
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing)
+            {
+                _onDispose();
+            }
+            base.Dispose(disposing);
+        }
+    }
+}