fix: some improvements to electron app (#2089)

apps/electron/layers/main/src/send-main-event.ts

@@ -0,0 +1,14 @@
+import { BrowserWindow } from 'electron';
+
+import type { MainEventMap } from '../../main-events';
+
+function getActiveWindows() {
+  return BrowserWindow.getAllWindows().filter(win => !win.isDestroyed());
+}
+
+export function sendMainEvent<T extends keyof MainEventMap>(
+  type: T,
+  ...args: Parameters<MainEventMap[T]>
+) {
+  getActiveWindows().forEach(win => win.webContents.send(type, ...args));
+}