This patch gives the clock's hour hand a shadow for the spindle too, since the shadow model we're using should logically have the spindle casting a shadow.

It also also increases the height of the minute hand shadow since its current length is short enough that it sometimes doesn't connect to anything.

CCBUG: 396612

Before:

After:

There are no visual changes whatsoever because the hour hand shadow is not currently displayed (See D17751 for background)