[flutter_releases] Flutter beta 3.6.0-0.0.pre Framework Cherrypicks (#115503)

* Create candidate branch version flutter-3.6-candidate.0 for beta

* Update Engine revision to b754eabc98fb5dc75d90b8b5fca440ce8aac4c44 for beta release 3.6.0-0.0.pre
diff --git a/bin/internal/engine.version b/bin/internal/engine.version
index bf7e2ae..f69369a 100644
--- a/bin/internal/engine.version
+++ b/bin/internal/engine.version
@@ -1 +1 @@
-e7d7edab98ad0aead7a8f66d45bc11c559e3f7b9
+b754eabc98fb5dc75d90b8b5fca440ce8aac4c44
diff --git a/bin/internal/release-candidate-branch.version b/bin/internal/release-candidate-branch.version
new file mode 100644
index 0000000..fc891fe
--- /dev/null
+++ b/bin/internal/release-candidate-branch.version
@@ -0,0 +1 @@
+flutter-3.6-candidate.0