Failure raised in parent workflow code when a child workflow ends in failure.
Wraps the underlying cause from the child alongside the child's identity.
cause
@type t() :: %Temporalex.ChildWorkflowFailure{ __exception__: true, cause: Exception.t() | nil, message: String.t(), namespace: String.t() | nil, retry_state: atom() | nil, run_id: String.t() | nil, workflow_id: String.t() | nil, workflow_type: String.t() | nil }