Revert "Merge pull request #230693 from Atemu/fix/fhsenv-escape-runScript-path"

This reverts commit 840f2e0ac5, reversing
changes made to d3ed0402e5.

This breaks appimage which puts args into the runScript and we don't provide a
good way to pass thru additional args.

The actual bug was in nix-alien which should escape paths; providing a valid
runScript is the responsibility of the caller.

pkgs/build-support/build-fhsenv-bubblewrap/default.nix

@@ -111,7 +111,7 @@ let
   init = run: writeShellScript "${name}-init" ''
     source /etc/profile
     ${createLdConfCache}
-    exec ${lib.escapeShellArg run} "$@"
+    exec ${run} "$@"
   '';
 
   indentLines = str: lib.concatLines (map (s: "  " + s) (filter (s: s != "") (lib.splitString "\n" str)));