Minor adjustment of blink codes and 'unstick' the M2 button. (#6521)

src/ButtonThread.cpp

@@ -349,8 +349,12 @@ void ButtonThread::attachButtonInterrupts()
 #endif
 
 #ifdef BUTTON_PIN_ALT
+#ifdef ELECROW_ThinkNode_M2
+    wakeOnIrq(BUTTON_PIN_ALT, RISING);
+#else
     wakeOnIrq(BUTTON_PIN_ALT, FALLING);
 #endif
+#endif
 
 #ifdef BUTTON_PIN_TOUCH
     wakeOnIrq(BUTTON_PIN_TOUCH, FALLING);