layers: Accept a wider range of utf8 characters as valid
layers: Accept a wider range of utf8 characters as valid

And keep from flagging the CTS tests as invalid

Change-Id: I46a3b1741ec2549b29fe72c1b0098593b2484490

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools