set browser window bg color to white

https://www.electronjs.org/docs/latest/faq#the-font-looks-blurry-what-is-this-and-what-can-i-do

Author: raine

src/main/main.ts

@@ -58,7 +58,8 @@ export const createWindow = async (initData: InitData) => {
     icon: getAssetPath('icon.png'),
     webPreferences: {
       preload: path.join(__dirname, 'preload.js')
-    }
+    },
+    backgroundColor: '#fff'
   })
 
   void mainWindow.loadURL(