fix: Fixes calculate at feature for new info view, updates static pressure test

Sources/SharedModels/EquipmentMeasurement.swift

@@ -2,6 +2,7 @@ import Foundation
 
 #warning("Make values non-optional")
 #warning("Need to make air handler external static handle large filter pressure drops.")
+#warning("Add an exterenal static pressure strategy for if the filter is built-in or external")
 public enum EquipmentMeasurement: Equatable {
  
   case airHandler(AirHandler)
@@ -59,8 +60,9 @@ public enum EquipmentMeasurement: Equatable {
     public var externalStaticPressure: Double {
       var postFilterAdder = 0.0
       if let postFilterPressure = $postFilterPressure.positiveValue,
-         postFilterPressure > 0.1 {
-        postFilterAdder = postFilterAdder - 0.1
+         postFilterPressure > 0.1 
+      {
+        postFilterAdder = postFilterPressure - 0.1
       }
       return ($returnPlenumPressure.positiveValue ?? 0)
       + postFilterAdder