Select how update RSS feed, via PocketCast crawler or directly

### Description

I'd like to have a setting that would allow me to choose how to update podcast RSS feed, via PocketCast crawler or directly. Some podcasts feeds have issues where the crawler can't reach them.

### Screenshots or screen recording

_No response_

### Did you search for existing list?

- [x] I have searched for existing issues.

Start by tracing how the Android app updates podcast RSS feeds and where the Pocket Casts crawler or direct-fetch path could be selected through a setting. Done means users can choose either update method and feeds that the crawler cannot reach can be updated directly; the issue names no files or tests to run.

Written by the indexing model from the issue text.