copy over 3.9.0-dev optimizations to load pre_load.json faster without boot

src/core/emsesp.cpp

@@ -1726,6 +1726,15 @@ void EMSESP::start() {
     // start web log service. now we can start capturing logs to the web log
     webLogService.begin();
 
+#ifndef EMSESP_STANDALONE
+    // apply any uploaded settings before any service loads them from the filesystem
+    if (system_.check_restore()) {
+        root             = LittleFS.open(EMSESP_SETTINGS_FILE);
+        factory_settings = !root;
+        root.close();
+    }
+#endif
+
     // loads core system services settings (network, mqtt, ap, ntp etc)
     esp32React.begin();
 
@@ -1773,14 +1782,6 @@ void EMSESP::start() {
     LOG_INFO("Last system reset reason Core0: %s, Core1: %s", system_.reset_reason(0).c_str(), system_.reset_reason(1).c_str());
 #endif
 
-    // see if we're restoring a settings file
-#ifndef EMSESP_STANDALONE
-    if (system_.check_restore()) {
-        LOG_WARNING("EMS-ESP will restart to apply new settings. Please wait.");
-        system_.system_restart();
-    };
-#endif
-
     LOG_DEBUG("eFuse device information: %s", system_.getBBQKeesGatewayDetails().isEmpty() ? "not set" : system_.getBBQKeesGatewayDetails().c_str());
 
     webSettingsService.begin(); // load EMS-ESP Application settings

src/core/system.cpp

@@ -451,7 +451,7 @@ void System::system_restart(const char * partitionname) {
     EMSuart::stop();    // stop UART so there is no interference
 
 #ifndef EMSESP_STANDALONE
-    delay(1000);   // wait 1 second
+    delay(500);    // wait 0.5 second
     ESP.restart(); // ka-boom! - this is the only place where the ESP32 restart is called
 #endif
 }