Fix scroll indicator insets to adjust for mini-player

[SergioEstevao]

Fixes #1072

This PR updates the code on multiple view controllers to adjust correctly the insets for the content and scroll indicators depending of the visibility of the mini-player.

With Mini-Player	Without Mini-Player

To test

• Start the app
• On each of the main tabs check the scrolling limits with and without the mini-player visible and see if the content and scrollbar indicators are correct and adjust to the mini-player visibility
  • Podcasts check on the root screen and inside folders
  • Discovery: check on the root screen, and navigate inside the sections
  • Filters: check on the root screen and inside specific filters
  • Profile: check on the root screen and the multiple settings and account screens

Checklist

• I have considered if this change warrants user-facing release notes and have added them to CHANGELOG.md if necessary.
• I have considered adding unit tests for my changes.
• I have updated (or requested that someone edit) the spreadsheet to reflect any new or changed analytics.