VIS-1064: fix PPT exporting issue (#17)

* Candidate fix

* Bump version

Author: JustinCCYap

theSrc/scripts/widgetdefinition.js

@@ -179,7 +179,12 @@ const widgetDefinition = {
     }
 
     // Trigger plotly.js calls defined via `plotlyProxy()`
-    plot.then(function() {
+    plot.catch(function() {
+      // Used by Displayr to determine when widget is ready to be snapshot for testing
+      graphDiv.setAttribute("rhtmlwidget-status", "ready");
+    }).then(function() {
+      // Used by Displayr to determine when widget is ready to be snapshot for testing
+      graphDiv.setAttribute("rhtmlwidget-status", "ready");
       if (HTMLWidgets.shinyMode) {
         Shiny.addCustomMessageHandler("plotly-calls", function(msg) {
           var gd = document.getElementById(msg.id);