[#12954][fix] AutoDeploy: Fix Gemma4 MoE config (disable multi_stream_moe, lower free_gpu_memory_fraction) (#12955)

Signed-off-by: Suyog Gupta <41447211+suyoggupta@users.noreply.github.com>

Author: suyoggupta

examples/auto_deploy/model_registry/configs/gemma4_moe.yaml

@@ -16,7 +16,7 @@ max_seq_len: 8192
 enable_chunked_prefill: true
 kv_cache_config:
   enable_block_reuse: false
-  free_gpu_memory_fraction: 0.8
+  free_gpu_memory_fraction: 0.4
 transforms:
   compile_model:
     piecewise_enabled: true
@@ -26,5 +26,6 @@ transforms:
     enabled: true
   fuse_gemms:
     enabled: true
+  #TODO(suyogg): Enable when https://github.com/NVIDIA/TensorRT-LLM/issues/12954 is resolved
   multi_stream_moe:
-    enabled: true
+    enabled: false