Homepage CFR shows incorrectly on non-homepage site

[data-sync-user]

Steps:

There are probably several different ways to trigger this, steps I used are below and seem to be 100% reproducible:

1. Fresh install of app
2. Launch app, type in google.com on the first tab and hit return to load
3. Add a new tab, and type bing.com, hit return to load

Result: the homepage CFR shows and after the webpage loads it remains in place, showing incorrectly on the non-homepage site

Expected: at minimum we should hide the CFR if the user leaves the homepage. The exact UX in this flow might need additional discussion (e.g. do we re-show the CFR if we can detect it was not displayed long enough for the user to read it)

!Simulator Screenshot - iPad (10th generation) - 2024-05-10 at 11.07.12.png|width=2360,height=1640,alt="Simulator Screenshot - iPad (10th generation) - 2024-05-10 at 11.07.12.png"!

┆Issue is synchronized with this Jira Bug