Evaluation: redirect sessions to repo-local .eval_sessions via helper; apply across entrypoints; add tests (#10540)

Co-authored-by: openhands <openhands@all-hands.dev>

evaluation/benchmarks/mint/run_infer.py

@@ -16,6 +16,7 @@ from evaluation.utils.shared import (
     compatibility_for_eval_history_pairs,
     get_default_sandbox_config_for_eval,
     get_metrics,
+    get_openhands_config_for_eval,
     make_metadata,
     prepare_dataset,
     reset_logger_for_multiprocessing,
@@ -110,15 +111,10 @@ def get_config(
         f'$OH_INTERPRETER_PATH -m pip install {" ".join(MINT_DEPENDENCIES)}'
     )
 
-    config = OpenHandsConfig(
-        default_agent=metadata.agent_class,
-        run_as_openhands=False,
+    config = get_openhands_config_for_eval(
+        metadata=metadata,
         runtime='docker',
-        max_iterations=metadata.max_iterations,
-        sandbox=sandbox_config,
-        # do not mount workspace
-        workspace_base=None,
-        workspace_mount_path=None,
+        sandbox_config=sandbox_config,
     )
     config.set_llm_config(metadata.llm_config)
     agent_config = config.get_agent_config(metadata.agent_class)