When initializing WriteStackFrame with re-entry during serialization, consider doing a type comparison

[ahsonkhan]

The intent of this TODO isn't super clear. @steveharter can you help fill in the details or what action is required?

runtime/src/libraries/System.Text.Json/src/System/Text/Json/Serialization/WriteStackFrame.cs

Lines 97 to 104 in d4b06b1

	public JsonConverter InitializeReEntry(Type type, JsonSerializerOptions options, string? propertyName = null)
	{
	JsonClassInfo newClassInfo = options.GetOrAddClass(type);
	// todo: check if type==newtype and skip below?
	// Set for exception handling calculation of JsonPath.
	JsonPropertyNameAsString = propertyName;

cc @steveharter