ciflow/trunk/174992: Fix clang build on aarch64
A subtle compiler bug was breaking AI development on M1/M2 Macs.
Deep Dive
The PyTorch team fixed a critical build error preventing the framework from compiling with clang on aarch64 (Apple Silicon) architectures. The issue stemmed from a name mangling mismatch between clang and nvcc compilers involving `enable_if` templates, causing linker failures. The fix redefines the problematic symbols to work around the compiler discrepancy, resolving GitHub issue #174898. This patch is essential for developers building PyTorch from source on modern Mac hardware.
Why It Matters
This fix unblocks AI researchers and engineers developing on Apple's latest M-series chips, a growing segment of the machine learning community.