some thermal fixes

[ss14-Starlight]

Short description

Why we need to add this

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• I do not require assistance to complete the PR.
• Before posting/requesting review of a PR, I have verified that the changes work.
• I have added screenshots/videos of the changes, or this PR does not change in-game mechanics.
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Changelog

🆑 STARLIGHT TEAM

• add: Thermal vision can now be toggled on and off.
• fix: Fixed a bug where the thermal vision shader would fly off to the opposite end of the universe.
• fix: Fixed a bug where the Cyclorite eye was mistakenly considered an implant.
• fix: Fixed a bug where flash didn’t work with thermal and night vision.
• fix: Fixed a bug where carried living creatures were displayed on top of the sprite. Now, creatures inside a container are completely invisible.