Prevent GloablErrors from being monkey patched

All current shipped versions of zone.js contain a monkey patch that fails
to pass constructor arguments on to GlobalErrors. That would crash Jasmine
if it was applied early enough to have any effect.

See <https://github.com/angular/angular/issues/63072>.

src/core/requireCore.js

@@ -90,7 +90,19 @@ var getJasmineRequireObj = (function(jasmineGlobal) {
     j$.NullDiffBuilder = jRequire.NullDiffBuilder(j$);
     j$.ObjectPath = jRequire.ObjectPath(j$);
     j$.MismatchTree = jRequire.MismatchTree(j$);
-    j$.GlobalErrors = jRequire.GlobalErrors(j$);
+
+    // zone.js tries to monkey patch GlobalErrors in a way that is either a
+    // no-op or causes Jasmine to crash, depending on whether it's done before
+    // or after env creation. Prevent that.
+    const GlobalErrors = jRequire.GlobalErrors(j$);
+    Object.defineProperty(j$, 'GlobalErrors', {
+      enumerable: true,
+      configurable: false,
+      get() {
+        return GlobalErrors;
+      },
+      set() {}
+    });
 
     j$.Truthy = jRequire.Truthy(j$);
     j$.Falsy = jRequire.Falsy(j$);