[flutter-3.45-candidate.0] Sync engine.version to 0a9f488c1306b9d5042a78cffbfef1fa4428b64e (#186845)

Updates the engine.version file from `None (New File)` to `0a9f488c1306b9d5042a78cffbfef1fa4428b64e`.

bin/internal/engine.version

diff --git a/bin/internal/engine.version b/bin/internal/engine.version
new file mode 100644
index 0000000..b0f788c
--- /dev/null
+++ b/bin/internal/engine.version
@@ -0,0 +1 @@
+0a9f488c1306b9d5042a78cffbfef1fa4428b64e