Add a test for rendering default views for the missing views in a subset custom composition

[warpech]

As explained in #123 (comment), the starcounter-include tests do not catch if this works correctly.

[warpech]

Related: https://github.com/Starcounter/Blending/issues/571

[miyconst]

Won't be fixed, since the component is not relevant for Starcounter 3.