TopoSet shows wrong cell/face count while running in parallel (only showing master counts)

Summary

Hey all, during some tests I figured out that topoSet is showing wrong face/cell counts in the output while running in parallel. Its simply a problem of the outputted text but this should be fixed as well as it is somehow non conservative.

Steps to reproduce

Run the motorbike tutorial (incompressible/simpleFoam/motorBike) and add the following line to the topoSetDict:

{
    name    testWallFaceSet;
    type    faceSet;
    action  new;
    source  patchToFace;
    patch   lowerWall;
}

after topoSet is executed in parallel we get the following output:

Time = 0
    mesh not changed.
Created cellZoneSet inner
    Applying source boxToCell
    Adding cells with centre within boxes 1((-1 -0.5 0) (6 0.5 2))
    cellZoneSet inner now size 253135
Created faceSet lowerWallFaces
    Applying source patchToFace
    Adding all faces of patches (lowerWall) ...
    Found matching patch lowerWall with **662 **faces.
    faceSet lowerWallFaces now size **5349**

End

As one can see, the output of faces for the lowerWall is 662 (which comes from the master proc). However, the total number of faces is 5349 as given in the output as well. Hence, people might be confused.

What is the current bug behaviour?

The output of faces/cell count is related to the master proc.

What is the expected correct behavior?

The output should include the complete amount of cells/faces of all procs.

Environment information

OpenFOAM version : v2212

Possible fixes

Probably a global reduction of the data is missing and hence, only the master proc data is used.

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