ItemPropertyChanged is called multiple times per actual icon change.
senderName is the same, objectPath is the same, but our registered name
for the callback differs.
We can't use the provided name for item searching, since that *can*
differ from the one we registered with (Looking at you, Discord. Discord
registers with org.kde.StatusNotifierItem-*, but calls back with :*.*)
Since then the object path will sometimes be wrong for the name, we just
use the one from the icon we originally registered with. This causes
multiple icons to reload though
Potential fix for https://github.com/scorpion-26/gBar/issues/26
Implements a rough outline of the SNI (StatusNotifierItem) d-bus
protocol for tray icons.
Note: This is currently *very* WIP
Full implementation will close https://github.com/scorpion-26/gBar/issues/5
