fix(list): update keybindings when setting items

Bug: when calling SetItems when items was previously empty, the keybindings for
up/down do not appear.

Fix: call updateKeybindings in SetItems.

Signed-off-by: Christian Stewart <christian@paral.in>

list/list.go

@@ -297,6 +297,7 @@ func (m *Model) SetItems(i []Item) tea.Cmd {
 	}
 
 	m.updatePagination()
+	m.updateKeybindings()
 	return cmd
 }