## Ticket
1583: "add incontent ads to category/channel pages (break up every X claims?), or add back bottom ad in those areas."
## Behavioral changes
- Hide when in homepage (as currently we have ads between categories).
- Fix the light theme (it was transparent).
## Code changes
- While an Effect is the 'right' choice given that there is no jsx to mount, the need to prop-drill from the parent was getting a bit annoying, so converted to a Component instead.
- Remove the delay for Core Vitals avoidance for now -- seems to make the sticky less likely to serve an ad.
- Now that the membership state is correctly populated for incognito (see 9d830615), there is no more need to check for `isAuthenticated`.
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