This changes the Sanitizer configs to build all the vcpkg dependencies
with our specified CFLAGS and CXXFLAGS for ASAN and UBSAN.
Unfortunately, we can't yet enable actually compiling them with
sanitizers enabled, because this causes test failures that need to be
investigated.
By default, we were linking the debug version of all vcpkg dependencies,
which was very noticeable in benchmarks. Let's default to a build type
with reasonable performance.
