fix(recipe): resubmit the renamed GLM-5.2 Slurm script - #135

The GLM-5.2 recipe still passes rl_glm5_2.sh to sbatch when CHAIN_MAX enables automatic resubmission. That file was renamed to rl_glm5_2_753b.sh, so the successor submission fails before training starts.

Use the current filename, keeping the repository-root path needed when Slurm runs its spool copy.

Validation: bash -n and Python compile checks pass. Exercising the chain block with a stubbed sbatch fails on the old path and succeeds with the new path, including the incremented chain depth and LOAD_ENABLE=1. No Slurm jobs were submitted. The Python test suite cannot collect in this environment because the training dependencies are not installed.