Rename Stats Insight cards for clarity

[guarani]

Expected behavior

The Stats Insight cards for likes and comments show 7-days worth of data, so they should be re-named to "Likes" and "Comments". Their current name suggests they're showing all-time totals.

Actual behavior

The cards are called "Total Likes" and "Total Comments", which is confusing.

Steps to reproduce the behavior

1. Log in to the Jetpack app
2. Go to Stats
3. Switch to the Insights tab
4. Add the Total Likes and Total Comments cards
5. Notice that they show 7-day data (their counts match the 7-day counts on WP.com's Traffic tab)

Tested on iPhone 11, iOS 17.4.1, Jetpack iOS 24.7

h/t to @staskus for flagging this in #22824 (comment)

[dangermattic]

Thanks for reporting! 👍