Adds the etc2 dest path + "etc2_astc" import format to every prop
texture sidecar. Generated by `godot --headless --import` after
flipping rendering/textures/vram_compression/import_etc2_astc to
true in project.godot (commit 46ab28f). Without these sidecars,
re-running --import on a clean checkout would regenerate them
anyway, but committing keeps imported_formats deterministic and
avoids spurious diffs on every CI / dev machine.
39 .import files touched, all under assets/props/. No texture
binaries changed.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>