Use Ordinal comparison for extension method names

src/Framework/AspNetCoreAnalyzers/src/CodeFixes/Dependencies/ThisAndExtensionMethod.cs

@@ -16,7 +16,7 @@ public override bool Equals(object? obj)
         if (obj is ThisAndExtensionMethod other)
         {
             return SymbolEqualityComparer.Default.Equals(ThisType, other.ThisType) &&
-                ExtensionMethod.Equals(other.ExtensionMethod, StringComparison.OrdinalIgnoreCase);
+                ExtensionMethod.Equals(other.ExtensionMethod, StringComparison.Ordinal);
         }
         return false;
     }