feat: 调整品牌开屏与纯黑原生启动

pubspec.yaml

@@ -129,10 +129,8 @@ flutter_launcher_icons:
 # dart run flutter_native_splash:create
 flutter_native_splash:
   color: "#000000"
-  image: assets/icon/splash_logo.png
   android: true
   ios: true
   web: false
   android_12:
     color: "#000000"
-    image: assets/icon/splash_logo_android12.png