Enable kick button only when able to use it

Now it's disabled:
 - When lacking the kick permission
 - The player is the host
 - You are the player

src/openrct2-ui/windows/Player.cpp

@@ -445,6 +445,12 @@ void window_player_overview_invalidate(rct_window* w)
         viewport->view_width = viewport->width << viewport->zoom;
         viewport->view_height = viewport->height << viewport->zoom;
     }
+
+    // Only enable kick button for other players
+    const bool canKick = network_can_perform_action(network_get_current_player_group_index(), 15);
+    const bool isServer = network_get_player_flags(w->number) & NETWORK_PLAYER_FLAG_ISSERVER;
+    const bool isOwnWindow = (network_get_current_player_id() == w->number);
+    widget_set_enabled(w, WIDX_KICK, canKick && !isOwnWindow && !isServer);
 }
 
 void window_player_statistics_close(rct_window* w)