Suppress verification of libclang_rt.ubsan_standalone*.so libraries.

These libraries are now compiled with -Wl,-z,global, which flags them as
GLOBAL libraries. Previously, these libraries would fail to load via
dlopen(). While they are not technically public, we do want them to
remain GLOBAL, so that they are loaded appropriately for interception.

Bug: http://b/116968618
Bug: http://b/110779387
Test: Build with new toolchain and run CTS LinkerNamespacesTest.
Change-Id: Icefa4c238b425e52e8406bbd8c289384cbfd8671