Fix legacy QwenPI H1 attention contract

Set interleave_self_attention=false only for the three QwenPI H1 checkpoints trained before StarVLA 25db14af, restoring their all-layer cross-attention training contract.

zero-latency/extreme-parkour-go2/vla/starvla-qwenpi_v3-h1/20260912T175510/config.yaml

@@ -26,7 +26,7 @@ framework:
       action_dit_hidden_dim: 1024
       dropout: 0.2
       final_dropout: true
-      interleave_self_attention: true
+      interleave_self_attention: false
       norm_type: ada_norm
       positional_embeddings: null
       attention_head_dim: 64

zero-latency/humanoidbench-balance-simple/vla/starvla-qwenpi_v3-h1/humanoidbench_balance_simple_qwenpi_v3_formal_latest/config.yaml

@@ -25,7 +25,7 @@ framework:
       action_dit_hidden_dim: 1024
       dropout: 0.2
       final_dropout: true
-      interleave_self_attention: true
+      interleave_self_attention: false
       norm_type: ada_norm
       positional_embeddings: null
       attention_head_dim: 64

zero-latency/mikasa-intercept-grab-fast/vla/starvla-qwenpi_v3-h1/mikasa_intercept_grab_fast_qwenpi_v3_formal_latest_r8gpu8_20260907T082154Z/config.yaml

@@ -25,7 +25,7 @@ framework:
       action_dit_hidden_dim: 1024
       dropout: 0.2
       final_dropout: true
-      interleave_self_attention: true
+      interleave_self_attention: false
       norm_type: ada_norm
       positional_embeddings: null
       attention_head_dim: 64