Fix bazel build unique function test caused by #ef3e521 (#132726)

Author: basioli-k

utils/bazel/llvm-project-overlay/compiler-rt/BUILD.bazel

@@ -75,6 +75,7 @@ cc_library(
         "lib/orc/simple_packed_serialization.h",
         "lib/orc/stl_extras.h",
         "lib/orc/string_pool.h",
+        "lib/orc/unique_function.h",
         "lib/orc/wrapper_function_utils.h",
     ],
     strip_include_prefix = "lib/orc",