Don't advance state in TransientMultiApp::solveStep if we're restarting
Don't advance state in TransientMultiApp::solveStep if we're restarting

Closes second half of #15333

jessecarterMOOSE/moose,harterj/moose,bwspenc/moose,milljm/moose,idaholab/moose,andrsd/moose,nuclear-wizard/moose,lindsayad/moose,milljm/moose,laagesen/moose,jessecarterMOOSE/moose,andrsd/moose,harterj/moose,SudiptaBiswas/moose,nuclear-wizard/moose,dschwen/moose,bwspenc/moose,milljm/moose,harterj/moose,dschwen/moose,milljm/moose,sapitts/moose,harterj/moose,lindsayad/moose,andrsd/moose,sapitts/moose,dschwen/moose,laagesen/moose,milljm/moose,sapitts/moose,nuclear-wizard/moose,idaholab/moose,andrsd/moose,laagesen/moose,bwspenc/moose,sapitts/moose,idaholab/moose,idaholab/moose,dschwen/moose,nuclear-wizard/moose,SudiptaBiswas/moose,andrsd/moose,sapitts/moose,jessecarterMOOSE/moose,laagesen/moose,jessecarterMOOSE/moose,SudiptaBiswas/moose,jessecarterMOOSE/moose,bwspenc/moose,bwspenc/moose,dschwen/moose,laagesen/moose,SudiptaBiswas/moose,lindsayad/moose,lindsayad/moose,idaholab/moose,lindsayad/moose,harterj/moose,SudiptaBiswas/moose