Add tests that combine an iterated Advection scheme with DG composition

[anne-glerum]

See #5529.

This PR adds two tests, one without the DG limiter, and one with, to test the combination of an iterated Advection scheme with DG composition. These tests also show that when the limiter is used and the global minimum and maximum specified in the input file actually cut off local composition values, the advection solve of that particular compositional field does not converge with nonlinear iterations.

For all pull requests:

• [x] I have followed the instructions for indenting my code.

For new features/models or changes of existing features:

• [x] I have created a testcase for the new feature/benchmark in the tests/ directory.