SM sanity at low pressure

[FunnyMan3595]

What Does This PR Do

Adjust the SM gas production method to avoid producing a ridiculous output when active and at very low pressure.

Why It's Good For The Game

SM should not go supernova because it was low pressure.

Testing

Procedure:

1. Disable engine bypass.
2. Enable and maximize the engine input/output pipes.
3. Configure the air alarm normally. This will create a vacuum in the chamber.
4. Fire one emitter shot at the SM.
5. Set the output speed on one N2 tank's pump to 9 kPa.
6. Turn on that pump.

Results without this change:

and worsening. It will quickly reach a state that's effectively unsalvageable.

Results with this change:

and stable.

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Declaration

• I confirm that I either do not require pre-approval for this PR, or I have obtained such approval and have included a screenshot to demonstrate this below.

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Changelog

🆑
fix: Fixed a bug that would cause the SM to go haywire if it was ever active and exposed to an extremely low (but nonzero) amount of gas.
/:cl: