Ignore indexers from row types in source generator

SpreadCheetah.SourceGenerator.SnapshotTest/Snapshots/G.PropertyType_ClassWithIndexer#MyNamespace.MyContext.g.verified.cs

@@ -0,0 +1,35 @@
+//HintName: MyNamespace.MyContext.g.cs
+// <auto-generated />
+#nullable enable
+using SpreadCheetah;
+using SpreadCheetah.SourceGeneration;
+using SpreadCheetah.Styling;
+using System;
+using System.Buffers;
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace MyNamespace
+{
+    public partial class MyContext
+    {
+        private static MyContext? _default;
+        public static MyContext Default => _default ??= new MyContext();
+
+        public MyContext()
+        {
+        }
+
+        private WorksheetRowTypeInfo<MyNamespace.MyClass>? _MyClass;
+        public WorksheetRowTypeInfo<MyNamespace.MyClass> MyClass => _MyClass
+            ??= EmptyWorksheetRowContext.CreateTypeInfo<MyNamespace.MyClass>();
+
+        private static DataCell ConstructTruncatedDataCell(string? value, int truncateLength)
+        {
+            return value is null || value.Length <= truncateLength
+                ? new DataCell(value)
+                : new DataCell(value.AsMemory(0, truncateLength));
+        }
+    }
+}

SpreadCheetah.SourceGenerator.SnapshotTest/Tests/PropertyTypeTests.cs

@@ -85,4 +85,27 @@ public partial class MyContext : WorksheetRowContext;
         // Act & Assert
         return TestHelper.CompileAndVerify<WorksheetRowGenerator>(source);
     }
+
+    [Fact]
+    public Task PropertyType_ClassWithIndexer()
+    {
+        // Arrange
+        const string source = """
+            using SpreadCheetah.SourceGeneration;
+            using System;
+
+            namespace MyNamespace;
+
+            public class MyClass
+            {
+                public int this[int index] => index;
+            }
+
+            [WorksheetRow(typeof(MyClass))]
+            public partial class MyContext : WorksheetRowContext;
+            """;
+
+        // Act & Assert
+        return TestHelper.CompileAndVerify<WorksheetRowGenerator>(source);
+    }
 }

SpreadCheetah.SourceGenerator/Extensions/SymbolExtensions.cs

@@ -48,6 +48,7 @@ public static bool IsInstancePropertyWithPublicGetter(
         {
             DeclaredAccessibility: Accessibility.Public,
             IsStatic: false,
+            IsIndexer: false,
             IsWriteOnly: false
         };
     }