[MCM-1336] Doors and Trapdoors in saved structure place incorrectly when mirrored or rotated

Partner Rank: 2

Verification builds:
Minecraft.Windows_1.16.2200 - 5685695
Minecraft.Windows_1.13.0.35 - 3406689

Summary:
All doors and trapdoors place incorrectly when flipping or rotating a saved structure, either with structure blocks or using the /structure command

Impact:
This may have a major effect on reviews, players are unable to play the map correctly. A parkouring and exploration challenge with two sides is made unfair to one side, as the mirroring makes jumps with trapdoors easier on the mirrored half, and iron door flipping issues cause unintended shortcuts.

Noxcrew's currently in-development map is affected by this bug.

Repro Steps:

Create a new Minecraft world
Create a structure that includes a door or trapdoor, using either a structure block or /structure save
Either:

Load the structure with a structure block, making sure to select Mirror: X
OR
Run /structure load [STRUCTURE NAME] ~ ~ ~ 0_degrees x

Observed Results:
Doors and trapdoors are mirrored incorrectly

Expected Results:
Doors and trapdoors should be mirrored correctly in all cases

Screenshots/Videos attached:
https://youtu.be/FXNX4O5hegA

Regression Build:
None; this bug was present when structure blocks were implemented in 1.13.0