lpbeliveau-silabs

### Reproduction steps / Feature Add an `#ifdef MATTER_DM_PLUGIN_` without `#include ` defined previously in the path. ### Platform core (please add to version below) ### Platform Version(s) 1.3 ###...

As mentioned [here](https://github.com/project-chip/connectedhomeip/pull/30855#discussion_r1801129788), we currently have a config in the CHIPConfig to indicate whether or not we are relying on the default handlers to handle scenes actions on external clusters....

[Scenes ] TC_S_2_6 Scripts Update

3

Updated the S_2_6 test steps according to plan and VS doc Fixes : https://github.com/project-chip/matter-test-scripts/issues/277