The left and right hallway corners of trial chambers have missing blocks

The minecraft:trial_chambers/hallway/left_corner and minecraft:trial_chambers/hallway/right_corner templates have missing blocks

Steps to reproduce:

1. Create a new world in the last version.

2. Look for a trial chamber that has that template.

Spected result:

Those templates should have the same blocks that Java Edition has.

Actual result:

They have deepslate blocks instead.