This release renames the ExecutionContext.errors attribute to ExecutionContext.pre_execution_errors to better reflect its purpose. The old errors attribute is now deprecated but still available for backward compatibility.
The pre_execution_errors attribute specifically stores errors that occur during the pre-execution phase (parsing and validation), making the distinction clearer from errors that might occur during the actual execution phase.
For backward compatibility, accessing ExecutionContext.errors will now emit a deprecation warning and return the value of pre_execution_errors.
Releases contributed by @patrick91 via #3947