Remove an extra layer of wrapping for matchers/custom matchers

Helps reduce how nested custom matchers have to be for users as well as
Jasmine internal matchers

[#59161378]

src/core/matchers/toBeNaN.js

@@ -1,20 +1,18 @@
 getJasmineRequireObj().toBeNaN = function(j$) {
 
   function toBeNaN() {
-    return {
-      compare: function(actual) {
-        var result = {
-          pass: (actual !== actual)
-        };
+    return function(actual) {
+      var result = {
+        pass: (actual !== actual)
+      };
 
-        if (result.pass) {
-          result.message = "Expected actual not to be NaN.";
-        } else {
-          result.message = "Expected " + j$.pp(actual) + " to be NaN.";
-        }
-
-        return result;
+      if (result.pass) {
+        result.message = "Expected actual not to be NaN.";
+      } else {
+        result.message = "Expected " + j$.pp(actual) + " to be NaN.";
       }
+
+      return result;
     };
   }