hovertemplate: do not look into trace object, use fullData instead

Author: antoinerg

src/components/fx/hover.js

@@ -974,7 +974,7 @@ function createHoverText(hoverData, opts, gd) {
         var hovertemplateLabels = d.hovertemplateLabels || d;
         var eventData = d.eventData[0] || {};
         if(hovertemplate) {
-            text = Lib.hovertemplateString(hovertemplate, hovertemplateLabels, eventData, trace);
+            text = Lib.hovertemplateString(hovertemplate, hovertemplateLabels, eventData);
 
             text = text.replace(EXTRA_STRING_REGEX, function(match, extra) {
                 name = extra; // Assign name for secondary text label

test/jasmine/tests/hover_label_test.js

@@ -1605,7 +1605,7 @@ describe('hover info', function() {
 
         it('should support pseudo-html', function(done) {
             var gd = document.getElementById('graph');
-            Plotly.restyle(gd, 'hovertemplate', '<b>%{y:$.2f}</b><br>%{name}<extra></extra>')
+            Plotly.restyle(gd, 'hovertemplate', '<b>%{y:$.2f}</b><br>%{fullData.name}<extra></extra>')
             .then(function() {
                 Fx.hover('graph', evt, 'xy');