try a higher timeout for jasmine tests in _select functio

Author: yujin-wu

test/jasmine/tests/splom_test.js

@@ -1586,7 +1586,7 @@ describe('Test splom select:', function() {
 
             var to = setTimeout(function() {
                 reject('fail: plotly_selected not emitter');
-            }, 300);
+            }, 700);
 
             gd.once('plotly_selected', function(d) {
                 clearTimeout(to);