fix puzzle pack choice bug from first playtest

projects/flixel-desktop-habit-puzzle-game/playtest-todo.txt

@@ -0,0 +1,17 @@
+~~first time opening, choose puzzle pack menu doesn't go away~~
+
+
+- create task menu goes away after choosing type?
+- no way to cancel deleting task/etc. (Forces them to delete one)
+	- can only delete one at a time
+- delete key shouldn't close the application
+- press escape to work on puzzle needs explanation/a more intuitive way to do it
+- Explain that clicking on habits marks them finished
+- right click rotates pieces explanation/tooltip
+- add a label for this [TYPE OF] habit
+- don't allow slash in habit labels (unless inside brackets)
+
+- Interval multi-part tasks (i.e. laundry) will behave counter-intuitively (i.e. it tells you to dry your laundry a week after washing it)
+	- but sometimes the counter-intuitive behavior may be wanted
+	
+- fullscreen button

projects/flixel-desktop-habit-puzzle-game/source/HabitState.kiss

@@ -724,6 +724,7 @@
 (prop &mut :FlxGroup nextPuzzleChoiceGroup null)
 (method :Void startPuzzlePackChoice [nextStartingPoints]
     (when rewardSprites (rewardSprites.kill))
+    (when entryWindow (entryWindow.hide))
     (set puzzlePackChoiceWindow (SimpleWindow.promptForChoice "Choose a puzzle pack:"
                                                             (PuzzlePack.availablePacks model)
                                                             ->[:PuzzlePack pack] (ifLet [(Some np) pack.nextPuzzle]