[WiFi] Make sure to clear pending WiFi events on reconnect

Apparently this wasn't enough: https://github.com/letscontrolit/ESPEasy/pull/3650

Fix intended for [this report on the forum](https://www.letscontrolit.com/forum/viewtopic.php?p=53062#p53062)

src/src/DataStructs/WiFiEventData.cpp

@@ -56,16 +56,22 @@ bool WiFiEventData_t::unprocessedWifiEvents() const {
 }
 
 void WiFiEventData_t::clearAll() {
-  lastDisconnectMoment.clear();
-  lastConnectMoment.clear();
-  lastGetIPmoment.clear();
+  markWiFiTurnOn();
   lastGetScanMoment.clear();
   last_wifi_connect_attempt_moment.clear();
   timerAPstart.clear();
 
-  setWiFiDisconnected();
   lastWiFiResetMoment.setNow();
-  wifi_considered_stable = false;
+  wifi_TX_pwr = 0;
+  usedChannel = 0;
+}
+
+void WiFiEventData_t::markWiFiTurnOn() {
+  setWiFiDisconnected();
+  lastDisconnectMoment.clear();
+  lastConnectMoment.clear();
+  lastGetIPmoment.clear();
+  wifi_considered_stable    = false;
 
   // Mark all flags to default to prevent handling old events.
   processedConnect          = true;
@@ -77,17 +83,11 @@ void WiFiEventData_t::clearAll() {
   processedScanDone         = true;
   wifiConnectAttemptNeeded  = true;
   wifiConnectInProgress     = false;
-  wifi_TX_pwr = 0;
-  usedChannel = 0;
 }
 
 void WiFiEventData_t::markWiFiBegin() {
-  setWiFiDisconnected();
-  lastDisconnectMoment.clear();
-  lastConnectMoment.clear();
-  lastGetIPmoment.clear();
+  markWiFiTurnOn();
   last_wifi_connect_attempt_moment.setNow();
-  wifi_considered_stable = false;
   wifiConnectInProgress  = true;
   usedChannel = 0;
   ++wifi_connect_attempt;

src/src/DataStructs/WiFiEventData.h

@@ -29,6 +29,7 @@ struct WiFiEventData_t {
   bool unprocessedWifiEvents() const;
 
   void clearAll();
+  void markWiFiTurnOn();
   void markWiFiBegin();
 
   bool WiFiDisconnected() const;

src/src/ESPEasyCore/ESPEasyWifi.cpp

@@ -897,6 +897,8 @@ void setWifiMode(WiFiMode_t wifimode) {
   }
 
   if (cur_mode == WIFI_OFF) {
+    WiFiEventData.markWiFiTurnOn();
+
     #if defined(ESP32)
     esp_wifi_set_ps(WIFI_PS_NONE);
     #endif