Update episode publish date format after a week

Originally reported by @ezebecke.

On iOS episodes published date change from "day name" format to "Month number" format after first week from publish date:

If we check on Android, the format hasn't changed yet and it still shows as "day name":

zd-5292180

Start by locating the Android code that formats episode publication dates and compare its behavior with the iOS and Android examples in the issue. Done means Android changes from the day-name format to the month-and-number format after the first week, matching the reported iOS behavior.

Written by the indexing model from the issue text.