Fix parsing release group in Animebytes results (#11648)

[k0mmsussert0d]

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Animebytes has changed their torrent Property string format. For ongoing series it contains an episode number as second to last segment, e.g. 'Web|MKV|h264|720p|AAC2.0|Softsubs(SubsPlease)|Episode26|Freeleech'.

For finished series, the format is unchanged.

Provider's parse() removes Freeleech segment from the split string, then expects to find the release group name in the last string of an array. This is not the case for ongoing series, where the last string represent an episode number. To find the actual release group name, last two strings should be checked.

I intended to provide a test case to facilitate adapting this provider to any future changes of Animebytes data schema. Unfortunately, being unable to configure the authorized provider in the test suite I couldn't record a VCR cassette for the request. I asked more specific questions about providers initialization process in the project's Discord. If you could find some time to explain this mechanism to me, I can provide test coverage for this and other similar providers.