[hle/ui] Add cmds and fix invalid handle return, remove Starter applet from UI (#3376)

This fixes qlaunch "+ Options" :)

More:
- Remove Starter-Applet from menu (Starter is started by qlaunch)
- Stub OLSC cmds and add IStopperObject
- Fail-safe invalid handle return for system applets
- Stub IHomeMenuFunctions::IsSleepEnabled (closes qlaunch now when hitting sleep)
- Lower BuiltInNews timeout from 10s to 2s
- Use proper Event instead of KEvent in npns

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3376
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>
Co-authored-by: Maufeat <sahyno1996@gmail.com>
Co-committed-by: Maufeat <sahyno1996@gmail.com>

src/core/hle/service/bcat/news/builtin_news.cpp

@@ -1,4 +1,4 @@
-// SPDX-FileCopyrightText: Copyright 2025 Eden Emulator Project
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
 // SPDX-License-Identifier: GPL-3.0-or-later
 
 #include "core/hle/service/bcat/news/builtin_news.h"
@@ -108,8 +108,8 @@ std::vector<u8> DownloadImage(const std::string& url_path, const std::filesystem
     try {
         httplib::Client cli("https://eden-emu.dev");
         cli.set_follow_location(true);
-        cli.set_connection_timeout(std::chrono::seconds(10));
-        cli.set_read_timeout(std::chrono::seconds(30));
+        cli.set_connection_timeout(std::chrono::seconds(2));
+        cli.set_read_timeout(std::chrono::seconds(2));
 
 #ifdef YUZU_BUNDLED_OPENSSL
         cli.load_ca_cert_store(kCert, sizeof(kCert));