The link flag wrapping added by commit 5d5a7123 (IntelLLVM: Pass
linker flags to the compiler when used as linker, 2022-05-27,
v3.25.0-rc1~344^2~4) is not needed with Visual Studio generators because
MSBuild invokes the linker directly.  Furthermore, that commit omitted
wrapping of the per-config linker flags.

Revise the logic to add the link flag wrapping more precisely.

Fixes: #25533