Michael Catanzaro authored Aug 30, 2024 and Marge Bot committed Sep 09, 2024

Now that we have AdwTabOverview, it's possible to have no tabs after
Epiphany has started. Got to add a few more checks for this situation.
Notably, this fixes opening a new tab with Ctrl+T and opening links from
external applications if the tab overview is open with zero tabs.

Fixes #2448

Part-of: <GNOME/epiphany!1617>