[wasm] Disable failing AOT tests to get CI green again (#85111)

* [wasm] Disable failing AOT test - System.Collections.Immutable

Issue: #85012

* [wasm] Disable failing AOT tests - System.Runtime.Serialization.Xml*

- System.Runtime.Serialization.Xml.Tests
- System.Runtime.Serialization.Xml.ReflectionOnly.Tests

Issue: #85013

Author: radical

src/libraries/System.Collections.Immutable/tests/ImmutableListTestBase.cs

@@ -419,6 +419,7 @@ public void BinarySearch()
         }
 
         [Fact]
+        [ActiveIssue("https://github.com/dotnet/runtime/issues/85012", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsMonoAOT))]
         public void BinarySearchPartialSortedList()
         {
             ImmutableArray<int> reverseSorted = ImmutableArray.CreateRange(Enumerable.Range(1, 150).Select(n => n * 2).Reverse());

src/libraries/System.Runtime.Serialization.Xml/tests/XmlDictionaryWriterTest.cs

@@ -495,6 +495,7 @@ void AssertBytesWritten(Action<XmlDictionaryWriter> action, XmlBinaryNodeType no
     }
 
     [Fact]
+    [ActiveIssue("https://github.com/dotnet/runtime/issues/85013", typeof(PlatformDetection), nameof(PlatformDetection.IsBrowser), nameof(PlatformDetection.IsMonoAOT))]
     public static void XmlBaseWriter_WriteString()
     {
         const byte Chars8Text = 152;