Bot can't walk through an open iron door.

## Some information
Operating system: Windows 10 - 64 Bit
Java version: 1.8.0-b132
Minecraft version: 1.12.2
Baritone version: 1.3.3
Forge mods (if used): None

## Exception, error or logs
No logs to report on this.

## How to reproduce
Let's say that we tell the bot to walk 5 blocks in front of him (to his goal) but there is a wall blocking said goal, with an open iron door in the middle of the wall. He can walk around the wall, or he could walk through an iron door that's opened that would save tons of time. So what does this bot do in this scenario? He walks AROUND the whole structure.

## Final checklist
- [x] I have included the version of Minecraft I'm running, baritone's version and forge mods (if used).
- [x] I have included steps to reproduce the issue.
- [x] I have not used any OwO's or UwU's in this issue.