[MIRROR] Birdshot Chapel Fixes & Improvements (#1164)

* Birdshot Chapel Fixes & Improvements (#81642)

## About The Pull Request
Slightly remaps Birdshot's Monastery Garden, moves the altar, and
changes the area so Sparring Sect chaplains have a place to fight.
Fixes: #81614

![Screenshot 2024-02-22
230737](https://github.com/tgstation/tgstation/assets/73589390/b18d7a95-261b-41ca-b997-01a0b8480ad1)
## Why It's Good For The Game
The Chaplain didn't really have a place to preach before, and they also
had nowhere to spar! This converts the garden into a more useable space.
## Changelog
:cl:
qol: The chapel has been slightly overhauled on Birdshot, with the
chaplain now having a place to preach sermons.
fix: Sparring chaplains are now able to operate on Birdshot!
/:cl:

* Birdshot Chapel Fixes & Improvements

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Co-authored-by: Cheshify <[email protected]>