RssiPowerOff alarm enabled by default (#5129)

* RssiPowerOff alarm enabled by default
+ Companion support

* Fix continuously toggling RSSI on shutdown setting on X9

radio/src/opentx.cpp

@@ -2763,7 +2763,7 @@ uint32_t pwrCheck()
     }
     else if (pwr_press_time == 0) {
       pwr_press_time = get_tmr10ms();
-      if (message && g_eeGeneral.rssiPoweroffAlarm) {
+      if (message && !g_eeGeneral.disableRssiPoweroffAlarm) {
         audioEvent(AU_MODEL_STILL_POWERED);
       }
     }
@@ -2792,7 +2792,7 @@ uint32_t pwrCheck()
           }
         }
 #else
-        while ((TELEMETRY_STREAMING() && g_eeGeneral.rssiPoweroffAlarm)) {
+        while ((TELEMETRY_STREAMING() && !g_eeGeneral.disableRssiPoweroffAlarm)) {
           lcdRefreshWait();
           lcdClear();
           POPUP_CONFIRMATION("Confirm Shutdown");
@@ -2846,7 +2846,7 @@ uint32_t pwrCheck()
   }
 #endif
 
-  if (g_eeGeneral.rssiPoweroffAlarm) {
+  if (!g_eeGeneral.disableRssiPoweroffAlarm) {
     if (TELEMETRY_STREAMING()) {
       RAISE_ALERT(STR_MODEL, STR_MODEL_STILL_POWERED, STR_PRESS_ENTER_TO_CONFIRM, AU_MODEL_STILL_POWERED);
       while (TELEMETRY_STREAMING()) {