CheckMark: Fix on tap toggling of checkmarks in SortWidget (#9941)

The x and y coordinates of SortItemWidget's checkmark widgets were not updated, thus remained at their initial value 0.
Consequently the intersectWith check in SortItemWidget:onTap always evaluated to false, resulting in taps on checkmarks in the sort widget not being recognized.

Co-authored-by: NiLuJe <ninuje@gmail.com>

frontend/ui/widget/checkmark.lua

@@ -84,4 +84,13 @@ function CheckMark:init()
     self.dimen = unchecked_widget:getSize()
 end
 
+function CheckMark:paintTo(bb, x, y)
+    -- NOTE: Account for alignment/offsets computation being tacked on to self.dimen...
+    --       This is dumb and probably means we're doing something wonky... somewhere, but it works,
+    --       and allows us to keep sensible coordinates in dimen, so that they can be used for hitbox checks.
+    WidgetContainer.paintTo(self, bb, x - self.dimen.x, y - self.dimen.y)
+    self.dimen.x = x
+    self.dimen.y = y
+end
+
 return CheckMark