Fix black backgrounds if bgs toggled after startup

[drojf]

This PR fixes background only displaying for one frame, then changing to black, if graphics preset changed before reaching title screen, until game restarted.

• See below, copied from Changing graphics preset during 07th-mod logo screen (before reaching main menu) causes strange graphical bugs #104 (comment))

I investigated this issue today. I think it has to do with this part of the code (which only exists in our mod I think):

higurashi-assembly/Assets.Scripts.Core.Scene/Layer.cs

Lines 733 to 740 in 094444b

	public void ReloadTexture()
	{
	if (PrimaryName == string.Empty)
	{
	HideLayer();
	}
	else
	{

On startup, there seems to exist a Layer which has PrimaryName set to String.Empty (normally PrimaryName is the texture name). However I think this layer disappears, or has its PrimaryName set, after the first time you call DrawSceneWithMask().

So if ReloadTexture() was called just after the game had started
running, and DrawSceneWithMask() had not yet been called, it would cause the above HideLayer() call to run, which I assume causes this weird behavior where the background will turn black one frame after being displayed (although I'm not sure why).

I tested removing the HideLayer() call and it seems to fix the issue. I'm pretty confident it won't break anything, since ReloadAllImages() (which calls ReloadTexture()) is only ever called when you change our graphics related mod options. So if you never change any graphics mod options, ReloadAllImages() is never called.

Worst case the user can restart their game to fix an issue (if this removal of HideLayer() causes an issue)

I have put the fix on the https://github.com/07th-mod/higurashi-assembly/compare/f-fix-corrupt-graphics branch