Proposed fix for handling Exodus files that lack time
Proposed fix for handling Exodus files that lack time

(refs #16738)

(cherry picked from commit 1cdf99cd31d16beaa87b6a7b0d85dc0231fbbbad)

keithroe/vtkoptix,keithroe/vtkoptix,keithroe/vtkoptix,keithroe/vtkoptix,keithroe/vtkoptix,keithroe/vtkoptix,keithroe/vtkoptix,keithroe/vtkoptix