fix(SystemStatus): cap cpu_usage at 100

Author: jaredhendrickson13

pfSense-pkg-RESTAPI/files/usr/local/pkg/RESTAPI/Models/SystemStatus.inc

@@ -252,7 +252,10 @@ class SystemStatus extends Model {
         $cpu_count = (int) get_single_sysctl('hw.ncpu');
 
         # Determine the CPU usage by dividing the last minute load avg by the cpu count and multiplying by 100
-        return ($load_avg_last_min / $cpu_count) * 100;
+        $cpu_usage = ($load_avg_last_min / $cpu_count) * 100;
+
+        # If the usage estimate is above 100%, ensure it is capped at 100
+        return ($cpu_usage <= 100) ? $cpu_usage : 100;
     }
 
     /**