Make itertools available to product and vendor

Bug: 270690570

Test: mma in external/rust/crates
Change-Id: I3fb9305dacdeb0fafb7aafc90ff9c8bc0405ecb0
diff --git a/Android.bp b/Android.bp
index 4f5f17c..0d022a8 100644
--- a/Android.bp
+++ b/Android.bp
@@ -57,4 +57,6 @@
         "//apex_available:platform",
         "//apex_available:anyapex",
     ],
+    product_available: true,
+    vendor_available: true,
 }