Deepslate, gravel, and ores can generate within trial chamber hallways

Random deepslate and other blocks can generate inside of the Trial Chamber structure
Here is an example:

Version: 1.21.1

Seed: 9044644909157501258
Coordinates: /execute in minecraft:overworld run tp @s 59389.37 -27.00 228.04 -1262.07 -14.84

Steps to Reproduce:

1. Generate a world with the seed provided above and teleport to the given coordinates.

2. Look closely at the blocks within the trial chamber.