Changed Energy Management example default build args to enable test e…

…vent triggers (#31496)

* Changed default build args to enable test event triggers by default for EVSE in energy management app.

* Changed default build args to enable test event triggers by default for EVSE in energy management app - in args.gni not in platform/linux/BUILD.gn

This corrects commit d320036.

examples/energy-management-app/linux/args.gni

@@ -29,3 +29,4 @@ chip_project_config_include_dirs += [ "${chip_root}/config/standalone" ]
 matter_enable_tracing_support = true
 
 chip_enable_read_client = false
+chip_enable_energy_evse_trigger = true