[GR-62881] LLVM_NINJA_TOOLCHAIN: pass -fuse-ld=lld on Darwin too

Workaround to avoid ABI mismatch of libLTO.dylib when the system linker is used, see llvm/llvm-project#109549

Use lld shipped with LLVM_TOOLCHAIN instead.

Author: lewurm

sdk/mx.sdk/suite.py

@@ -1359,7 +1359,7 @@ class UniversalDetector {
 AR=xcrun <path:LLVM_TOOLCHAIN>/bin/llvm-ar
 CFLAGS=
 CXXFLAGS=
-LDFLAGS=
+LDFLAGS=-fuse-ld=lld
 '''
             },
           },