chore: import upstream snapshot with attribution

rllib/env/env_errors.py

@@ -0,0 +1,18 @@
+"""Error classes for RLlib environment operations."""
+
+from ray.util.annotations import PublicAPI
+
+
+@PublicAPI(stability="alpha")
+class StepFailedRecreateEnvError(Exception):
+    """An exception that signals that the environment step failed and the environment needs to be reset.
+
+    This exception may be raised by the environment's `step` method.
+    It is then caught by the `EnvRunner` and the environment is reset.
+    This can be useful if your environment is unstable, regularely crashing in a certain way.
+    For example, if you connect to an external simulator that you have little control over.
+    You can detect such crashes in your step method and throw this error to not log the error.
+    Use this with caution, as it may lead to infinite loops of resetting the environment.
+    """
+
+    pass