Update window management for Windows platform

- Changed fullscreen mode to maximize window on Windows during startup in both mainWindow.js and window.js.
- Improved consistency in window behavior across different operating systems.

public/mainWindow.js

@@ -231,7 +231,7 @@ export function createWindow() {
   if (process.platform === 'darwin') {
     win.maximize()
   } else if (process.platform === 'win32') {
-    win.setFullScreen(true)
+    win.maximize()
   }
 }
 

src/desktop/window.js

@@ -100,7 +100,7 @@ function applyStartupWindowState(window) {
   if (isMacOS) {
     window.maximize?.()
   } else if (process.platform === 'win32') {
-    window.setFullScreen?.(true)
+    window.maximize?.()
   }
 
   setTimeout(broadcastWindowState, 100)