Rendering multiple timesteps in SILO with only one defined mesh

ParaView cannot render a timeseries collection via SILO, where the mesh is only defined once and all other files 'reference' that mesh object.

Files to reproduce: time_invariant_mesh.7z

The 'base' file contains the static mesh.

The remaining timestep files have a multi-block mesh object in each of them. However, that object points to the one and only realized mesh in the base file.

Tested and verified in VisIt 3.0.

Might be related to #19298 ?

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