Add Qwen3-4B+Qwen-8B router files

Qwen3-4B+Qwen-8B/default_router.pt

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:e6b6de23f0506f878261a331cd0bf12c99f71f4c26938ca6b48f31c73e1e094b
-size 238224386
+oid sha256:20ef3bce66c8277d833dfb587756c92d78c7bb417aa8d2556e9246e4b7aa0b39
+size 238223493