fix: handle context cancellations in txsim (backport #2830) (#2833)

This is an automatic backport of pull request #2830 done by
[Mergify](https://mergify.com).


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Co-authored-by: Callum Waters <[email protected]>

test/txsim/run.go

@@ -98,9 +98,16 @@ func Run(
 			log.Info().Err(err).Msg("sequence terminated")
 			continue
 		}
+		if errors.Is(err, context.Canceled) || errors.Is(err, context.DeadlineExceeded) {
+			continue
+		}
 		log.Error().Err(err).Msg("sequence failed")
 		finalErr = err
 	}
 
+	if ctx.Err() != nil {
+		return ctx.Err()
+	}
+
 	return finalErr
 }