Add suspend_auto_report flag to suppress auto-report

Marlin/src/Marlin.h

@@ -188,6 +188,10 @@ extern volatile bool wait_for_heatup;
   extern volatile bool wait_for_user;
 #endif
 
+#if HAS_AUTO_REPORTING
+  extern bool suspend_auto_report;
+#endif
+
 #if ENABLED(AUTO_BED_LEVELING_UBL)
   typedef struct { double A, B, D; } linear_fit;
   linear_fit* lsf_linear_fit(double x[], double y[], double z[], const int);