Filter hook entry points by ICD entry point presence

For device proc hooks which intercept core functions
check whether there exists an exposed core function
from the ICD, and skip exposure if none is found.

This avoids having to replicate exposure filtering
based on requested Vulkan API versions inside the
Loader - rely on the ICD to handle it correctly.

Bug: 309752984
Change-Id: Ibeb13dae8eccaa859072ee5233013d99d5b26ef0