Ruined portals don't generate in ice caves

The Bug:

Ruined portals don't generate in ice caves.

Buried ruined portals can generate in dripstone caves, lush caves and sulfur caves, but never in ice caves. Mineshafts had the same gap (MC-312410) and got ice caves added in 26.4 Snapshot 4.

Steps to Reproduce:

1. Open the 26.4 Snapshot 4 jar file and locate the data/minecraft/tags/worldgen/biome/has_structure/ruined_portal_standard.json file.

2. Observe if ice caves are listed among the cave biomes.

Observed Behavior:

The biome tag has_structure/ruined_portal_standard lists dripstone, lush, and sulfur caves but not ice caves.

Expected Behavior:

The tag would list ice caves too.