[SYCL][NFC] Adds %python substitution to abi_check.py (#8097)

Extending work done in #7916 to add %python substitution also in
abi_check.py, so that we keep %python substitution also when the whole
file is generated by the script.

Author: maarquitos14

sycl/tools/abi_check.py

@@ -114,7 +114,7 @@ def dump_symbols(target_path, output):
     out.write("\n# This file is automatically generated by abi_check.py tool.")
     out.write("\n# DO NOT EDIT IT MANUALLY. Refer to sycl/doc/developer/ABIPolicyGuide.md for more info.")
     out.write("\n################################################################################")
-    out.write("\n\n# RUN: env LLVM_BIN_PATH=%llvm_build_bin_dir python")
+    out.write("\n\n# RUN: env LLVM_BIN_PATH=%llvm_build_bin_dir %python")
     out.write(" %sycl_tools_src_dir/abi_check.py --mode check_symbols")
     if os.name == 'nt':
       out.write(" --reference %s %llvm_build_bin_dir/")