Load more content is shown even after scrolling back to NTP

[srirambv]

Description

Load more content is shown even after scrolling back to NTP

Steps to reproduce

1. Enable News and wait for Load new content message to show up
2. Scroll back up
3. Message is not dismissed

Actual result

Expected result

Should dismiss the load new content message when scrolled back up to NTP

Reproduces how often

Easily reproduced

Brave version

1.76.19 x64 Nightly

Device

• Brand/model: Pixel 8
• Android version: 15

Channel information

• release (stable)
• beta
• nightly

Reproducibility

• with Brave Shields disabled
• with Brave Rewards disabled
• in the latest version of Chrome

Miscellaneous information

cc: @deeppandya @hffvld @Uni-verse