As is the case with other graphics-based timers, the imbued heart timer
will not fire if other graphics animations are triggered (such as those
created when fighting the Dagannoth Kings). To add this timer more
reliably, this commit will add the timer when a Magic stat boost occurs
of the appropriate amount after recently clicking on an imbued heart.
Because the magic level boost, combined with an imbued heart click
check, is a reliable way to detect usage of an imbued heart, the
graphics check is removed.