Ace Medical - CPR not returning heart rate

[Sakuria566]

Description

CPR appears to have 0 chance to return a heart rate to a T1 patient.

Expected Behaviour

CPR should eventually return a heart rate to a T1

Steps to Reproduce

• Get a Tier 1 patient
• Perform CPR repeatedly
• Patient won't regain a heart rate.

[tbeswick96]

Caused by acemod/ACE3#9360
This adds some level of oxygen simulation, isn't used by much currently but does affect heart rate changes.

CPR is causing the patient to come out of CA, but their heart rate then spikes due to the oxygen saturation being so low which spikes the HR which spikes the BP which drops them back into CA.
I assume the maths for the spo2 values is just missing something. I'll disable it until it's fixed on ACE's side