Resolve #3204146 "Broken exposed sort"

Someone who knows more about what's happening here should review this MR. But this solves the immediate problem while maintaining some of the functionality.

Closes #3204146

src/Plugin/views/display_extender/ViewsEviDisplayExtender.php

@@ -77,6 +77,16 @@ class ViewsEviDisplayExtender extends DisplayExtenderPluginBase {
         $form_empty = FALSE;
       }
     }
+    foreach ($this->displayHandler->handlers as $type => $value) {
+      if ($type != 'filter') { // let the above code deal with filters
+        foreach ($this->view->$type as $handler) {
+          if ($handler->canExpose() && $handler->isExposed()) {
+              // One is all we need; if we find it, return TRUE.
+             $form_empty = FALSE;
+            } 
+          }
+      }
+    }
     if ($form_empty) {
       $form['#access'] = FALSE;
     }