Feat: add qwen3-next (w packing+cce) (#3150)

* feat: upgrade cce for qwen3-next

* feat: add sample qwen3 config

* feat: add packing patch for chunk_gated_delta_rule

* feat: add qwen3 link

* fix: tuple name

* feat: add tested qwen3 config

* fix: improve log

* feat: add patch for fla without packing

* fix: remove fla patch for standard mode

* feat: enable packing

* feat: add qwen3-next tests

* chore: move tests

src/axolotl/integrations/cut_cross_entropy/README.md

@@ -19,7 +19,7 @@ python scripts/cutcrossentropy_install.py | sh
 
 - If you are installing from pip
 ```bash
-pip3 uninstall -y cut-cross-entropy && pip3 install "cut-cross-entropy[transformers] @ git+https://github.com/axolotl-ai-cloud/ml-cross-entropy.git@c564afc"
+pip3 uninstall -y cut-cross-entropy && pip3 install "cut-cross-entropy[transformers] @ git+https://github.com/axolotl-ai-cloud/ml-cross-entropy.git@c5aa3ef"
 ```
 
 ## Usage
@@ -65,6 +65,7 @@ plugins:
 - qwen2_5_vl
 - qwen3
 - qwen3_moe
+- qwen3_next
 - smollm3
 - seed_oss
 - voxtral