Bug located embedding GUI

### 🔍 Before submitting the issue

- [x] I have searched among the existing issues
- [x] I am using a Python virtual environment

### 🐞 Description of the bug

The embedding GUI is stuck at loading screen

### 📝 Steps to reproduce

from ansys.mechanical.core import App
app=App(version=261, globals=gloals(), interactive=True)

### 💻 Which operating system are you using?

Windows

### 📀 Which ANSYS version are you using?

26R1

### 🐍 Which Python version are you using?

3.11

### 📦 Installed packages

```shell
NA
```

Start at the ansys.mechanical.core App entry point and reproduce the loading-screen hang on Windows with Ansys 26R1, Python 3.11, and interactive=True. Check the provided reproduction carefully, including the globals argument, and compare the GUI startup path with a working launch; done means the embedding GUI loads successfully or the blocking failure is isolated.

Written by the indexing model from the issue text.