update max duration for trainer

Author: yawenzzzz

scripts/2025_10_02_phase2/script.py

@@ -190,7 +190,7 @@ def build_dataset_config(common: CommonComponents) -> OlmoEarthDatasetConfig:
 
 def build_trainer_config(common: CommonComponents) -> TrainerConfig:
     """Build the trainer config for an experiment."""
-    MAX_DURATION = Duration.epochs(301)
+    MAX_DURATION = Duration.steps(700000)
     METRICS_COLLECT_INTERVAL = 10
     CANCEL_CHECK_INTERVAL = 25
     LOAD_STRATEGY = LoadStrategy.if_available