Add metrics.json to saes_sql_interp_bm2_cs1_experiment_4.3_syn=True/k=32

saes_sql_interp_bm2_cs1_experiment_4.3_syn=True/k=32/model.layers.23.post_attention_layernorm/metrics.json

@@ -0,0 +1 @@
+{"dead_pct": 0.4379464387893677, "fvu": 0.02075442485511303}