Update product treble check for VNDK deprecation

On devices which launched with an earlier version than R, if vndk is
deprecated, /product is no longer added to linker namespaces because
ro.product.vndk.version is gone.
The original change addressed an issue for devices running on U, but
on newer Android releases, /product is always treblelized.

Bug: 341228914
Test: Open any /product app that uses jni libs from /product on a
  device with shipping api level <= 29, observe it no longer crashes

Change-Id: I4e4f8ae5fdff2298bfc85a5e7076f26dcc0f67d6
1 file changed