Remaps Wasteplanet Pandora Attempt 2 Electric Boogaloo (#2300)

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## About The Pull Request
Remaps wasteplanet_pandora to not be a tiny box with a one-way entry
into a locked room with a pandora. The mysterious duplicate lines have
been removed for good this time (I remembered to hit "Sync Changes")

![251871247-0c8241c1-58bf-4659-9218-7edbc9cff921](https://github.com/shiptest-ss13/Shiptest/assets/95449138/59306688-aa99-48bc-8f39-c1d8af2526ac)

![251876112-825e3f5a-4389-4bcd-99cf-49d05e821b4f](https://github.com/shiptest-ss13/Shiptest/assets/95449138/ce8bbfd2-eee6-4cd6-9eb2-401841f53b22)

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## Why It's Good For The Game
A ruin that is just a box with a one way portal into an arena with a
dangerous enemy and no loot just ain't right. Hopefully this map can act
as an example of what to do with megafauna/elite "boss" ruins.
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## Changelog

:cl:
add: Remapped wasteplanet_pandora.dmm
/:cl:

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Signed-off-by: zevo <[email protected]>
Co-authored-by: Bjarl <[email protected]>
Co-authored-by: spockye <[email protected]>