fixed bug that was causing the reading in the headers of the bin sensro graphs to be converted evertime the tab changed to "Sensors"

src/bin/graphs/BinComponentGraph.tsx

@@ -184,7 +184,7 @@ export default function BinComponentGraph(props: Props) {
           <UnitMeasurementSummary
             component={component}
             reading={UnitMeasurement.convertLastMeasurement(
-              component.status.lastGoodMeasurement.map(m => UnitMeasurement.create(m, user))
+              lastMeasurement.map(m => UnitMeasurement.create(m, user))
             )}
           />
         }