fix: MCP window shows 'Not connected' while the stdio bridge is serving requests - #1349

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

reference not found: DATA/Managed/UnityEngine/UnityEditor.PackageManagerUIModule.dll

reference not found: DATA/PlaybackEngines/WindowsStandaloneSupport/UnityEditor.WindowsStandalone.Extensions.dll

reference not found: DATA/PlaybackEngines/AndroidPlayer/UnityEditor.Android.Extensions.dll

reference not found: DATA/PlaybackEngines/AndroidPlayer/Unity.Android.Types.dll

reference not found: DATA/PlaybackEngines/AndroidPlayer/Unity.Android.Gradle.dll

reference not found: DATA/Managed/UnityEngine/UnityEngine.UNETModule.dll

reference not found: DATA/Managed/UnityEngine/UnityEngine.UIElementsNativeModule.dll

reference not found: DATA/Managed/UnityEngine/UnityEngine.ProfilerModule.dll

reference not found: DATA/Managed/UnityEngine/UnityEditor.UIServiceModule.dll