need to do slepc option push/pop for subapps, refer to #15791
need to do slepc option push/pop for subapps, refer to #15791

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