Replace usages of deprecated fakeShadeRepository with ShadeTestUtil

Note that there's no difference in behavior since the code currently
only runs when Flexiglass is off.

Bug: 361091641
Flag: NONE simple test change
Test: atest GlanceableHubContainerControllerTest
Change-Id: I0d2305352abc59f6da2ade85c811ca9de21c14fe
1 file changed