[wifi] Leave the AP before an LN882x reboots

esphome/components/wifi/wifi_component.h

@@ -506,6 +506,9 @@ class WiFiComponent final : public Component {
   // (In most use cases you won't need these)
   /// Setup WiFi interface.
   void setup() override;
+#ifdef USE_LN882X
+  void on_shutdown() override;
+#endif
   void start();
   void dump_config() override;
   void restart_adapter();

esphome/components/wifi/wifi_component_libretiny.cpp

@@ -777,6 +777,18 @@ bool WiFiComponent::wifi_start_ap_(const WiFiAP &ap) {
 network::IPAddress WiFiComponent::wifi_soft_ap_ip() { return {WiFi.softAPIP()}; }
 #endif  // USE_WIFI_AP
 
+#ifdef USE_LN882X
+void WiFiComponent::on_shutdown() {
+  // Leave the AP before a reboot: otherwise it still holds the association
+  // when the chip comes back and the first connects can stall or fail.
+  if (!this->is_connected())
+    return;
+  ESP_LOGD(TAG, "Disconnecting before reboot");
+  this->wifi_disconnect_();
+  delay(100);  // let the deauth go out before the reset
+}
+#endif
+
 bool WiFiComponent::wifi_disconnect_() {
   // Reset state first so disconnect events aren't ignored
   // and wifi_sta_connect_status_() returns IDLE instead of CONNECTING