chore: enable qwen3.5-plus model in extra_body configuration

- Uncomment qwen3.5-plus model configuration
- Aligns with RN project stable version
- Text and voice chat fully functional with frontend-rewrite branch

Author: 佟千秋

config/__init__.py

@@ -402,7 +402,7 @@ def translate_value(val):
     "qwen3-vl-plus-2025-09-23": EXTRA_BODY_OPENAI,
     "qwen3-vl-plus": EXTRA_BODY_OPENAI,
     "qwen3-vl-flash": EXTRA_BODY_OPENAI,
-    # "qwen3.5-plus": EXTRA_BODY_OPENAI,
+    "qwen3.5-plus": EXTRA_BODY_OPENAI,
     "qwen-plus": EXTRA_BODY_OPENAI,
     "deepseek-ai/DeepSeek-V3.2": EXTRA_BODY_OPENAI,
     # GLM 系列