Fix unicode tests for ios/tvOs

src/libraries/Common/tests/System/IO/Compression/ZipTestHelper.cs

@@ -336,9 +336,22 @@ public static async Task DirsEqual(string actual, string expected)
 
         public static void DirFileNamesEqual(string actual, string expected)
         {
-            IOrderedEnumerable<string> actualEntries = Directory.EnumerateFileSystemEntries(actual, "*", SearchOption.AllDirectories).Order();
-            IOrderedEnumerable<string> expectedEntries = Directory.EnumerateFileSystemEntries(expected, "*", SearchOption.AllDirectories).Order();
-            AssertExtensions.SequenceEqual(expectedEntries.Select(Path.GetFileName).ToArray(), actualEntries.Select(Path.GetFileName).ToArray());
+            IEnumerable<string> actualEntries = Directory.EnumerateFileSystemEntries(actual, "*", SearchOption.AllDirectories).Select(Path.GetFileName);
+            IEnumerable<string> expectedEntries = Directory.EnumerateFileSystemEntries(expected, "*", SearchOption.AllDirectories).Select(Path.GetFileName);
+
+            if (PlatformDetection.IsiOS || PlatformDetection.IstvOS)
+            {
+                // iOS/tvOS filesystems use NFD by default for non-ASCII characters, so we normalize to NFC for cross-platform comparison
+                actualEntries = actualEntries.Select(name => name.Normalize(NormalizationForm.FormC)).Order();
+                expectedEntries = expectedEntries.Select(name => name.Normalize(NormalizationForm.FormC)).Order();
+            }
+            else
+            {
+                actualEntries = actualEntries.Order();
+                expectedEntries = expectedEntries.Order();
+            }
+
+            AssertExtensions.SequenceEqual(actualEntries.ToArray(), expectedEntries.ToArray());
         }
 
         private static async Task ItemEqual(string[] actualList, List<FileData> expectedList, bool isFile)

src/libraries/System.IO.Compression.ZipFile/tests/ZipFile.Extract.Stream.cs

@@ -79,7 +79,6 @@ public async Task ExtractToDirectoryNormal_Unwritable_Unseekable(string file, st
 
     [Theory]
     [MemberData(nameof(Get_Booleans_Data))]
-    [ActiveIssue("https://github.com/dotnet/runtime/issues/72951", TestPlatforms.iOS | TestPlatforms.tvOS)]
     public async Task ExtractToDirectoryUnicode(bool async)
     {
         FileStream source = CreateFileStreamRead(async, zfile("unicode.zip"));

src/libraries/System.IO.Compression.ZipFile/tests/ZipFile.Extract.cs

@@ -44,7 +44,6 @@ public async Task ExtractToDirectoryNull(bool async)
 
         [Theory]
         [MemberData(nameof(Get_Booleans_Data))]
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/72951", TestPlatforms.iOS | TestPlatforms.tvOS)]
         public async Task ExtractToDirectoryUnicode(bool async)
         {
             string zipFileName = zfile("unicode.zip");

src/libraries/System.IO.Compression.ZipFile/tests/ZipFileExtensions.ZipArchive.Extract.cs

@@ -24,7 +24,6 @@ public async Task ExtractToDirectoryExtension(bool async)
             await DisposeZipArchive(async, archive);
         }
 
-        [ActiveIssue("https://github.com/dotnet/runtime/issues/72951", TestPlatforms.iOS | TestPlatforms.tvOS)]
         [Theory]
         [MemberData(nameof(Get_Booleans_Data))]
         public async Task ExtractToDirectoryExtension_Unicode(bool async)