AntennaPod Echo enhancements

As discussed with @ByteHamster, a list of desired improvements to AntennaPod Echo:

- [x] Force recache of top 5 podcast images. Many of the shared images had grey covers (examples: [1](https://twitter.com/teavangelize/status/1733867860756455879), [2](https://twitter.com/Karlos_Georgy/status/1734337340061958232), [3](https://twitter.com/WSEXTonIII/status/1733990904225227217), [4](https://mstdn.io/@steelman/111562798682978793), [5](https://layer8.space/@RyunoKi/111557733849828469), [6](https://paquita.masto.host/@FabianRY/111555666846287361), [7](https://eattherich.club/@category/111607834247212544))
- [ ] Ensure that in top 5 screen, full First place podcast name is visible, even if it's long (example: https://twitter.com/cyberkeak/status/1734568920076485033)
- [x] Ensure that in top 5 screen, if 2nd to 5th place poscasts' names are too long, cut it and put an ellipsis (example: https://twitter.com/NerdpunkE/status/1733773598077178229)
- [x] Improve horizontal aligning of numbers in the top 5 screen (centred below number 1, while title texts are left-aligned)
- [ ] Make design between the screens more differentiated, making it more engaging (needs a designer to come up with proposals)
- [ ] 'Podcast addict' definition: currently based on how quickly you listen after release, but only for those episodes you listen to. Should also consider the total number of hours one listened (we should establish arbitrary cut-offs). (needs discussion)
- [ ] Display the Echo card on whichever screen is selected as AntennaPod's default screen: some users didn't see the block as they don't use the home screen (example: https://toot.site/@cryptoxic/111641350314434338), and we don't want a notification.
- [x] Correct the Echo card flicker (show & hide after a second or so) when not reaching the 10 hours minimum (example: https://chaos.social/@ollibaba/111597116616849308)
- [ ] 'Favourite' definition: currently only based on the number of hours you listened. Should also consider other metrics: how often favourited an episode from that podcast, the percentage of episodes played. (feedback: https://tech.lgbt/@cuboci/111554972640118012)
- [ ] New screens:
- [ ] Did you know that x% of your podcasts support new podcast features (transcripts, chapters, finding tag). Podcast Y has all that we recognise!
- [ ] Your have applied tags to your podcasts, and from among them, x is your favourite.
- [ ] You use podcasts to fall asleep, during lunch, afternoon activities (based on last played time-in-day).
- [ ] Display Echo until first days of January (feedback: https://forum.antennapod.org/t/thanks-for-the-antennapod-echo/3784/6?u=keunes)