fix(electron): optimize electron open/close on mac (#6224)

1. never close main window on mac to allow it to be quickly open
1. make the browser show a bit faster
2. brought up app window when clicking some menu items

packages/frontend/electron/src/main/ui/handlers.ts

@@ -4,7 +4,7 @@ import { getLinkPreview } from 'link-preview-js';
 import { isMacOS } from '../../shared/utils';
 import { persistentConfig } from '../config-storage/persist';
 import { logger } from '../logger';
-import { getMainWindow, initMainWindow } from '../main-window';
+import { getMainWindow, initAndShowMainWindow } from '../main-window';
 import { getOnboardingWindow } from '../onboarding';
 import type { NamespaceHandlers } from '../type';
 import { launchStage } from '../windows-manager/stage';
@@ -58,7 +58,7 @@ export const uiHandlers = {
     try {
       const onboarding = await getOnboardingWindow();
       onboarding?.hide();
-      await initMainWindow();
+      await initAndShowMainWindow();
       // need to destroy onboarding window after main window is ready
       // otherwise the main window will be closed as well
       onboarding?.destroy();