Handle edge cases in sorting

**Feature request**
It would be great to have sorting for handlers.

**Use case**
Many users need this functionality for production deployments.

**Implementation idea**
Add a new config option `enable_sorting` with default `false`.

Start by locating the handler configuration and the code that currently determines handler order. Read how existing options are defined and how handlers are discovered or invoked, then check the repository's available tests or manual commands. Done means a documented enable_sorting option defaults to false and sorting behavior is covered for the relevant edge cases.

Written by the indexing model from the issue text.