fix: show chapters in ABS audiobook view

[fmunkes]

No description provided.

[marcelveldt]

This should not be needed, as discussed in discord.
Let's not do it this way but instead fix it at core level.

[fmunkes]

I close this then, the chapter times appear fine

[marcelveldt]

I was mistaken. For podcasts its fine to retrieve episodes later/lazy but for audiobooks they really need to be present.
If this causes excessive more requests on your end, please discuss on discord so we can change the model a bit at core level. TIP: just cache the episodes in your provider.