actions: fix threading bug in fv bc check
actions: fix threading bug in fv bc check

When running with multiple threads, we have multiple copies of a
BC object - so we must account for this when checking for duplicate bcs
on a boundary.

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