ONELAB2: use solverToRun instead of launchSolverAtStartup


git-svn-id: https://geuz.org/svn/gmsh/trunk@20159 59c8cabf-10d6-4a28-b43f-3936b85956c4
git-svn-id: https://geuz.org/svn/gmsh/trunk@20160 59c8cabf-10d6-4a28-b43f-3936b85956c4
git-svn-id: https://geuz.org/svn/gmsh/trunk@20161 59c8cabf-10d6-4a28-b43f-3936b85956c4