force launcher restart after update

src/main/index.ts

@@ -775,8 +775,21 @@ function createWindow(): void {
     await installDebPackage(debPath)
 
     if (!is.dev) {
-      app.relaunch()
-      app.quit()
+      for (const child of appProcesses.values()) {
+        child.kill()
+      }
+      appProcesses.clear()
+
+      for (const win of appWindows.values()) {
+        if (!win.isDestroyed()) win.close()
+      }
+      appWindows.clear()
+
+      setImmediate(() => {
+        app.relaunch()
+        app.quit()
+        setTimeout(() => app.exit(0), 1000)
+      })
     }
 
     return {