Roll engine to 249cc9b8. (#136428)

Rolls engine to 249cc9b86c45acb7e32b4097bc8a5059b91c888e.
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index a33d591..b0c5f21 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-7ccdde78a7d174dc0bf0be77102b205e844c7998
+249cc9b86c45acb7e32b4097bc8a5059b91c888e