Roll Flutter Engine from 9e76ee7ac1e5 to b2f0178d54d4 (2 revisions) (#112586)

diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index 80f6ea1..1e62684 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-9e76ee7ac1e51b8f4bb70b9b1d3a01bd81d69924
+b2f0178d54d4c750fe8f4fd5c4756dee27b89340