Add fix for trying to increment solves when solves are hidden (#1646)

* Don't attempt to increment solves if solves are hidden.

CTFd/themes/core/assets/js/pages/challenges.js

@@ -168,6 +168,12 @@ function renderSubmissionResponse(response) {
     );
     result_notification.slideDown();
 
+    if (
+      $(".challenge-solves")
+        .text()
+        .trim()
+    ) {
+      // Only try to increment solves if the text isn't hidden
       $(".challenge-solves").text(
         parseInt(
           $(".challenge-solves")
@@ -177,6 +183,7 @@ function renderSubmissionResponse(response) {
           1 +
           " Solves"
       );
+    }
 
     answer_input.val("");
     answer_input.removeClass("wrong");