Refactor inject_components to use new functionality in Catalyst 5.90090

[vanstyn]

We have been using CatalystX::InjectComponent, but this is now supported in Catalyst core as of version 5.90090.

Additionally, RapidApp::Builder now conflicts with Catalyst 5.90090 because it uses the same config key internally for its optional inject_components attr

[vanstyn]

RapidApp::Builder has already been tweaked to not conflict with the new Catalyst 5.90090, and so this is now less important. It would still be nice to do this at some point...