CI/Actions: Re-enabling fixed longtests

Commit purely in CI - re-enabling previously failing longtests which have been fixed by @angus-g .

Also removing commented-out test which became vlong.

Author: tmbgreaves

.github/workflows/ubuntu.yml

@@ -225,19 +225,18 @@ jobs:
                "explicit-hyperc-superman",
                "coarse-corner",
                "gls-StationPapa",
-               "medp1dgp2"
+               "medp1dgp2",
+               "Stokes_subduction_zone_vanKeken2008_OneA",
+               "Stokes_subduction_zone_vanKeken2008_TwoB",
+               "lagrangian_detectors_3d_2e5",
+               "lock_exchange_2d_Lagrangian_paths",
+               "square-convection-1e6",
+               "wetting_and_drying_balzano1_dg_parallel"
                ## Tests still failing and in need of fixing
                #"Stokes_mms_p1dg_p2",
-               #"Stokes_subduction_zone_vanKeken2008_OneA",
-               #"Stokes_subduction_zone_vanKeken2008_TwoB",
-               #"lagrangian_detectors_3d_2e5",
                #"lock_exchange",
-               #"lock_exchange_2d_Lagrangian_paths",
                #"lock_exchange_3d_parallel",
-               #"particle_entrainment_of_dense_layer",
                #"saltfinger2d_adaptive",
-               #"square-convection-1e6",
-               #"wetting_and_drying_balzano1_dg_parallel"
                #"hokkaido-nansei-oki_tsunami"
                #"driven_cavity",
               ]