Add GLM-5.2 support in NeMo RL

**Is your feature request related to a problem? Please describe.**
Add GRPO support of GLM-5.2 in NeMo RL, with Automodel prioritized.

**Describe the solution you'd like**
A clear and concise description of what you want to happen.

**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.

**Additional context**
Add any other context or screenshots about the feature request here.