Fix description item with material theme

SuwItemTitle.Description style can be used with material theme and
therefore should not reference GLIF specific attributes. Created new
attribute suwItemDescriptionTitleStyle so that GLIF item can use a
GLIF specific style to adjust description text alignment, while
material theme will use the normal SuwTitle style.

Test: ./gradlew connectedAndroidTest test
Bug: 37033526
Change-Id: I0d162bf6984f6a2fbbf04143a256fb70862527b0