Add compile-time architecture support check for bf16 in test_inf …

…function

Signed-off-by: Leandro Augusto Lacerda Campos <15185896+leandrolcampos@users.noreply.github.com>

stdlib/test/utils/test_numerics.mojo

@@ -53,6 +53,7 @@ fn test_inf() raises:
         var msg = "`test_inf` failed for `type == " + str(type) + "`"
         assert_true((val > 0.0) & isinf(val), msg=msg)
 
+    @parameter
     if not has_neon():
         # "bf16 is not supported for ARM architectures"
         _test_inf[DType.bfloat16]()