I found the code change in [v1.16.8](https://github.com/expr-lang/expr/releases/tag/v1.16.8) The check was added here: https://github.com/expr-lang/expr/commit/45c1ae72c0b5b031cca3533886638a7d0cae3165  But it was removed immediately in the following commit: https://github.com/expr-lang/expr/commit/cae6003b4797768f5a18001bdccfa47aaeaeb6a4  I would like to know why it was removed and if there is any alternative way to perform the check.
