IRSL: Fix search for Windows redist files with Intel Classic compiler

The oneAPI icx/ifx compilers are under `.../windows/bin`.
The classic icl/ifort compilers are under `.../windows/bin/intel64`.
Add paths to the redist directory relative to both locations.

Fixes: #22673
32 jobs for !6557 with irsl-intel-variants in 16 minutes and 55 seconds (queued for 1 second)
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