[Unity plugin] Update to URP for materials#3202

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Balint-H wants to merge 2 commits intogoogle-deepmind:mainfrom

Balint-H:unity/update-material

Commits on Mar 30, 2026

Update Unity material loading to URP, add case insensitivty to mesh filename parsing
Balint-H
committed
Release hotcontrol without using out-of-context gui call
Balint-H
committed