ExtUI Pause/Stop on all Pause/Stop (#15188)

Marlin/src/libs/stopwatch.cpp

@@ -39,6 +39,9 @@ bool Stopwatch::stop() {
   #endif
 
   if (isRunning() || isPaused()) {
+    #if ENABLED(EXTENSIBLE_UI)
+      ExtUI::onPrintTimerStopped();
+    #endif
     state = STOPPED;
     stopTimestamp = millis();
     return true;
@@ -52,6 +55,9 @@ bool Stopwatch::pause() {
   #endif
 
   if (isRunning()) {
+    #if ENABLED(EXTENSIBLE_UI)
+      ExtUI::onPrintTimerPaused();
+    #endif
     state = PAUSED;
     stopTimestamp = millis();
     return true;