Finish cmake TPL changes for Trilinos+MKL+SYCL

[brian-kelley]

This changes our BLAS/LAPACK cmake logic: if MKL is enabled, then its libraries provide the BLAS and LAPACK functions. We don't have to search for BLAS/LAPACK again in this case.

Follow on to #2185. Matches the KokkosKernels changes in trilinos/Trilinos#13330

[kokkos-devops-admin]

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[kokkos-devops-admin]

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[brian-kelley]

Converted to draft, it might not make sense to add MKL_PROVIDES_BLAS_LAPACK as a cmake variable here if trilinos/Trilinos#13330 ends up focusing only on the changes required for MKL+SYCL to work.