Clean up gridpartitioner and remove an intermediate MooseMesh
Clean up gridpartitioner and remove an intermediate MooseMesh

Closes #16632

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