OptisLang installation not included in CI

### 🔍 Before submitting the issue

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

### 🐞 Description of the bug

Some OptisLang integration tests require an OptisLang installation, which appears to be missing from CI

### 📝 Steps to reproduce

> !ls ansys_inc/v231
CEI Framework aisol commonfiles fluent licensingclient tp

### 💻 Which operating system are you using?

Windows

### 🐍 Which Python version are you using?

3.10

### 📦 Installed packages

```shell
ansys-fluent-core
ansys-fluent-parametric
```

Start by locating the CI configuration and the OptisLang integration tests mentioned in the issue, then compare the CI environment with the Windows installation path shown in the reproduction. The work is done when CI installs or provides OptisLang and the affected integration tests run successfully.

Written by the indexing model from the issue text.