Fix Numeric Error in SBGEMM Kernel for NEOVERSEV2
when DYNAMIC_ARCH=1
#5129
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In our previous PR (#5108), we introduced an SBGEMM kernel optimized for NEOVERSEV1 (SVE-256 bit). However, when running on NEOVERSEV2 (SVE-128 bit) under the dynamic architecture setting, the SBGEMM kernel incorrectly falls back to the NEOVERSEV1 implementation due to this line of code. This fallback behavior leads to numeric errors.
This PR addresses the issue by explicitly adding NEOVERSEV2 to DYNAMIC_ARCH, ensuring that the correct SBGEMM kernel is selected for NEOVERSEV2 instead of defaulting to NEOVERSEV1.