Blank pots in trial chambers don't match the rotation of the corridors

Blank decorated pots generated within trial chambers are almost always rotated 90° counter clockwise in relation to the wall. The exceptions to this are the pots that obstruct the way and pots with sherds. This is not as noticeable with the default textures, but it can be very obvious with resource packs applied.

Steps to Reproduce:

1. Apply the attached resource pack;

2. Find any trial chamber;

3. Observe the decorated pots.

Observed Results:
The pot rotation rarely faces the right direction.

Expected Results:
The pot rotation always matches the direction of the wall behind it.

Screenshots/Videos attached: Yes

Notes: For the issue that affects pots with sherds, see MC-272097