xdmf3 2026-01-29 (90b394f5)

Spiros Tsalikisrequested to merge
spiros.tsalikis/vtk:update-xdmf3 into master

Code extracted from:

https://gitlab.kitware.com/spiros.tsalikis/xdmf.git

at commit 90b394f554cb1e277095d53331f2444c2b0c221c (90b394f554cb1e277095d53331f2444c2b0c221c).

Backport: release

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