fix: the web version should not display client borders (#4040)

Co-authored-by: Alex Yang <himself65@outlook.com>

apps/core/src/atoms/settings.ts

@@ -49,7 +49,7 @@ export const fontStyleOptions = [
 }[];
 
 const appSettingBaseAtom = atomWithStorage<AppSetting>('affine-settings', {
-  clientBorder: environment.isDesktop ? !environment.isWindows : false,
+  clientBorder: environment.isDesktop && globalThis.platform !== 'win32',
   fullWidthLayout: false,
   windowFrameStyle: 'frameless',
   fontStyle: 'Sans',