Sphinx option rst_prolog and rst_epilog break return type injection

[caffeinepills]

When adding any of those sphinx options: rst_epilog or rst_prolog

It will break the return type injection. For example we have one for the minimum python version (min_python_version).

When using the rst_epilog all of the return types become the version:

If you use the rst_prolog the return types are working again, but now the return type always appear at the top of the class, before the header and parameters.

Disabling either will produce the correct result:

Due to the rst, it creates a bunch of nodes either before or after: <substitution_definition names="min_python_version">3.8</substitution_definition> which mess with the line parsing. Since it's assuming certain things come after paramters, it doesn't pick the correct lines.