[3.13] gh-118633: Add warning regarding the unsafe usage of eval and exec (GH-118437) (#126161)

gh-118633: Add warning regarding the unsafe usage of eval and exec (GH-118437)

* Add warning regarding the unsafe usage of eval

* Add warning regarding the unsafe usage of exec

* Move warning under parameters table

* Use suggested shorter text



* Use suggested shorter text



* Improve wording as suggested

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(cherry picked from commit 00e5ec0d35193c1665e5c0cfe5ef82eed270d0f4)

Co-authored-by: Daniel Ruf <daniel@daniel-ruf.de>
Co-authored-by: Kirill Podoprigora <kirill.bast9@mail.ru>
Co-authored-by: Jelle Zijlstra <jelle.zijlstra@gmail.com>