Only add tray widgets after the SNI proxy has finished initializing and the
item has a valid id/category pair.
This also removes invalid items through the host teardown path, refreshes the
tray when item status changes, and avoids calling DBus methods through a null
proxy during early clicks or scroll events.
Signed-off-by: Austin Horstman <khaneliman12@gmail.com>
On the `Passive` value of `Status` tray items would be hidden unless
`show-passive-items` is set to true.
On the `NeedsAttention` value of `Status` tray items will have a
`.needs-attention` CSS class.
It seems that dbusmenu is not ready to display menu immediately and
needs some time to sync data via DBus.
Fixes LIBDBUSMENU-GLIB-CRITICAL: dbusmenu_menuitem_send_about_to_show:
assertion 'DBUSMENU_IS_MENUITEM(mi)' failed.
Also fixes initial render of the menu with layer shell popups support patch.
Set ItemIsMenu to true by default because libappindicator supports
neither ItemIsMenu nor Activate method and compiant SNI implementations
are expected to reset the flag during initial property fetch.
To be revisited if anyone finds the implementation that has Activate
but does not set ItemIsMenu.
