[Feature]Support Ling2.5 Series

[JamesBrianD]

Checklist

• 1. If the issue you raised is not a feature but a question, please raise a discussion at https://github.com/sgl-project/sgl-jax/discussions/new/choose Otherwise, it will be closed.
• 2. Please use English, otherwise it will be closed.

Motivation

Supports the Ling 2.5 series models.

Goals

1. Achieve an aime26 of ~73 with Ling-2.6-flash.

Task Breakdown

1. Merged via the recurrent state memory pools system dependency. [Feature] Hybrid recurrent state management for KDA layers #946
2. Integrated GLA Kernel + LightningAttnBackend [RFC] GLA Kernel + LightningAttnBackend Integration #1032
3. Bailing moe 2.5 modeling
4. Verify the accuracy of the Ling 2.6 flash model
5. Support Ling 2.6-1T