Replace RequestHandlerRunner factory with RequestHandlerRunnerInterface factory

[boesing]

We have to remove the alias RequestHandlerRunnerInterface introduced in #110 and instead add it to the factories.
This should also remove the RequestHandlerRunner factory so that the RequestHandlerRunner service is not available via the container anymore.

This introduces a BC break but will provide better capabilities for projects which want to decorate the runner.

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This can go to 3.11.x indeed, but we should change this from aliases to factories in 4.x since RequestHandlerRunner should not be requestable as a service from the container.

Since delegators only work on services, this would be a BC break for sure and therefore I'd like to keep this in mind and thus dropping it here. Creating a new issue for 4.x from this comment to keep track.

Originally posted by @boesing in #110 (comment)

[boesing]

Might be superseded with laminas/laminas-servicemanager#168

[mlussi90]

Tried to provide the Code Change: #166

[mlussi90]

i created a new PR based on 4.0.x