chore(client/macos): bundle id 改为 com.pangolin.pangolin

去掉 Vpn 后缀:macOS 主 app + RunnerTests + Debug/Release entitlements 的
keychain-access-groups 统一为 com.pangolin.pangolin(便于 Apple 签名注册)。
iOS/Android 暂未改(iOS 涉 App Group + PacketTunnel 扩展,需统一时单独处理)。

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

client/macos/Runner/DebugProfile.entitlements

@@ -13,7 +13,7 @@
 	<!-- flutter_secure_storage: Data Protection Keychain 需要此 entitlement，否则返回 -34018 -->
 	<key>keychain-access-groups</key>
 	<array>
-		<string>$(AppIdentifierPrefix)com.pangolin.pangolinVpn</string>
+		<string>$(AppIdentifierPrefix)com.pangolin.pangolin</string>
 	</array>
 </dict>
 </plist>