Mock ICD should either report 1.1 support, or fix UpdateAfterBind limits

Context: https://gitlab.khronos.org/vulkan/vulkan/-/issues/3324

The Vulkan spec has this regarding UpdateAfterBind limits:

> The UpdateAfterBind descriptor limits must each be greater than or equal to the corresponding non-UpdateAfterBind limit.

However, the Mock ICD doesn't fill these values and returns 0. This results in validation layers when using the Mock ICD and asking for Vulkan version > 1.1, even though Mock ICD advertises support for the latest version:

```
pProperties->apiVersion = VK_HEADER_VERSION_COMPLETE;
```

Either the Mock ICD should advertise only Version 1.1 or (better yet) fix these limits.