Grouping issue in debug dialog for iOS players with USB and without project name

[citizenmatt]

When an iOS player is connected via USB, it will appear twice in the "Attach to Unity Process" dialog - once for the usual UDP broadcast message, debugging over wifi, and again for debugging over USB. If the player is built with Unity 2019.2 or earlier, there is no project sent with the UDP broadcast message, and the player is incorrectly grouped with the USB player. It should be in a group marked "Unknown Projects".

When displaying the list of players/processes, the items are initially sorted by project name. USB items don't report project name, and are incorrectly assumed to have no project, and so when the next item is a player that doesn't report a project, they are incorrectly grouped together.