Fix issue on old torch. (Comfy-Org#9791)

Author: comfyanonymous

comfy/ldm/hunyuan3dv2_1/hunyuandit.py

@@ -426,7 +426,7 @@ def __init__(
         text_states_dim=1024,
         qk_norm=False,
         norm_layer=nn.LayerNorm,
-        qk_norm_layer=nn.RMSNorm,
+        qk_norm_layer=True,
         qkv_bias=True,
         skip_connection=True,
         timested_modulate=False,