IOSSReader: Add caching option
The IOSSReader
proxy now has a Caching option. When enabled, the
reader will cache the mesh data in memory across multiple time steps.
Previously, when the option was not present, the reader would cache
always, which could lead to excessive memory usage. Now, the default
behavior is to not cache, but the user can enable it if desired.
This MR depends on !6742 (merged) which updates VTK.
This MR resolves #21576 (closed).
Edited by Spiros Tsalikis