[SYCL RTC] Disable sycl-jit on MacOS (#20625)

Fixes post-commit build failure on MacOS after
#20599.

Author: aelovikov-intel

buildbot/configure.py

@@ -32,7 +32,7 @@ def do_configure(args, passthrough_args):
     libclc_nvidia_target_names = ";nvptx64--nvidiacl"
 
     sycl_enable_jit = "OFF"
-    if not args.disable_jit:
+    if not args.disable_jit and sys.platform != "darwin":
         llvm_external_projects += ";sycl-jit"
         sycl_enable_jit = "ON"