Poll Port expander once after power down

pins.cpp

@@ -158,6 +158,8 @@ void powerOffCheckLoop() {
     Serial.println(groups);
     PINS.stage = "Ramped down";
 
+    // Poll the pins once to get latest status, as interrupts were disabled
+    poll_port_expander();
     // This event has been handled.
     PERFORM_PROCEDURE_FROM_INTERRUPT = 0;
     // Inform SIB that we're done and it can take data again.