[Core] Enable allreduce fusion by default for SM 10.3 (B300/GB300) (#37755)

Signed-off-by: Mohammad Miadh Angkad <176301910+mmangkad@users.noreply.github.com>

vllm/config/vllm.py

@@ -120,7 +120,7 @@ def enable_allreduce_rms_fusion(cfg: "VllmConfig") -> bool:
         and current_platform.is_cuda()
         and has_flashinfer()
         and (
-            current_platform.is_device_capability(100)
+            current_platform.is_device_capability_family(100)
             or current_platform.is_device_capability(90)
         )
         # tp-dp combination broken: