Windows loader uses dynamic MSVCRT by default

The comments on line 220-221 say one thing but this line is doing something else:

**Edit:** I've read the comment again, it seems to be fine, probably a misunderstanding on my side. However the default build behavior has changed, and we are using a dynamic MSVCRT for the static build. I don't know if this is the right thing to do. Changing the following line from `AND NOT` to `OR NOT` fixed my issue but it's probably the wrong approach.

https://github.com/KhronosGroup/OpenXR-SDK-Source/blob/33c4600cda9cd7689a2452c2251d8e5df0765d0e/src/loader/CMakeLists.txt#L208

Start with src/loader/CMakeLists.txt at line 208 and compare its condition with the comments around lines 220-221. Reproduce the Windows static-build configuration, determine whether it selects a dynamic MSVCRT, and verify the corrected behavior with the relevant Windows build.

Written by the indexing model from the issue text.