Fix: #368

[kooWZ]

isFavored and isSubscribed were not updated after request.
Fixes #368.

[w568w]

Very strange. We have already change isFavored when pressing the button:

DanXi/lib/page/forum/hole_detail.dart

Lines 474 to 477 in 35d283b

	onPressed: () async {
	final normalModel = _renderModel as Normal;
	if (normalModel.isFavored == null) return;
	setState(() => normalModel.isFavored = !normalModel.isFavored!);

How could it be possible that the button does not change its state?

Edit: I got it. We forgot setting isFavored to a non-null value, so it is always null and returns on Line 476. 😅