[NFC] Improve feature check for SME2
In the original code when INTRINSICCV_ENABLE_SME2 was OFF and clang compiler version was 18 or newer, the message was printed that the compiler did not support SME2.
In the original code when INTRINSICCV_ENABLE_SME2 was OFF and clang compiler version was 18 or newer, the message was printed that the compiler did not support SME2.