Revert "Merge pull request #16966 from why-el/symbolize-path-params"

This reverts commit 9d05d6de52871e57bfbf54a60de005e8a5f5b0e4, reversing
changes made to 0863c9248fd47a15e88e05ce4fcd80966684c0e3.

The change in the behaviour reported at #16958 doesn't exist since 4.0
and 4.1 works in the same way