Initialize Clock Size from NotificationPanelViewController

In change I0885d19e297ff5f881271ed0347e9699b3494928 I defaulted
the small clock to invisible, which likely introduced this bug.
From logs, it looks like an edge where neither clock is never
selected. We correct this by always calling `switchToClock` with
the correct size argument as soon as `KeyguardStatusViewController`
is acquired by `NotificationPanelViewController`

Fixes: 256809954
Test: Manully tested on a couple devices
Change-Id: I9143d6162411065ed2ed80cfa84d73e222c1f231