🚸 cap:HOST_ACTION_COMMANDS (#21987)

Marlin/src/gcode/host/M115.cpp

     // EMERGENCY_PARSER (M108, M112, M410, M876)
     cap_line(PSTR("EMERGENCY_PARSER"), ENABLED(EMERGENCY_PARSER));
 
+    // HOST ACTION COMMANDS (paused, resume, resumed, cancel, etc.)
+    cap_line(PSTR("HOST_ACTION_COMMANDS"), ENABLED(HOST_ACTION_COMMANDS));
+
     // PROMPT SUPPORT (M876)
     cap_line(PSTR("PROMPT_SUPPORT"), ENABLED(HOST_PROMPT_SUPPORT));