[Model] Support Ling-3.0-flash (BailingMoeV3) (#33561)

Signed-off-by: JustinTong <justintong0323@gmail.com>
Signed-off-by: Xinyuan Tong <xinyuantong.cs@gmail.com>
Co-authored-by: luoyuan.luo <luoyuan.luo@antgroup.com>
Co-authored-by: 得泽 <zhangkaihong.zkh@antgroup.com>
Co-authored-by: 翎悦 <vito.yy@antgroup.com>
Co-authored-by: 羽癫 <yudian.zy@antgroup.com>
Co-authored-by: tiwei.btw <tiwei.btw@antgroup.com>
Co-authored-by: Liangsheng Yin <hnyls2002@gmail.com>
Co-authored-by: 文赋 <zibin.zb@antgroup.com>
Co-authored-by: JustinTong <justintong0323@gmail.com>

.claude/skills/sglang-runtime-context/SKILL.md

@@ -290,7 +290,8 @@ where an object was handed one; it is not a global accessor.
   theirs from `spec` / `schedule` / `exec.graph`.
 - **a value only the instance can compute** → the named accessor in
   `runtime_context`, which is the one module allowed to read the slot:
-  `mamba_cache_chunk_size()`, `uses_mla_backend()`, `process_model_config()`.
+  `mamba_cache_chunk_size()`, `mamba_state_chunk_size()`, `uses_mla_backend()`,
+  `process_model_config()`.
   These have no leaf to read — they combine several fields, the HF config, or a
   property with no bag of its own. A new derived member gets an accessor here
   rather than call sites reaching for the record, and only when the bag-derived