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]

spec/core/matchers/toBeSpec.js

@@ -1,17 +1,17 @@
 describe("toBe", function() {
   it("passes when actual === expected", function() {
-    var matcher = j$.matchers.toBe(),
+    var matcherComparator = j$.matchers.toBe(),
       result;
 
-    result = matcher.compare(1, 1);
+    result = matcherComparator(1, 1);
     expect(result.pass).toBe(true);
   });
 
   it("fails when actual !== expected", function() {
-    var matcher = j$.matchers.toBe(),
+    var matcherComparator = j$.matchers.toBe(),
       result;
 
-    result = matcher.compare(1, 2);
+    result = matcherComparator(1, 2);
     expect(result.pass).toBe(false);
   });
 });