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/Env.js

@@ -11,6 +11,7 @@ getJasmineRequireObj().Env = function(j$) {
     options = options || {};
 
     const self = this;
+    const GlobalErrors = options.GlobalErrors || j$.GlobalErrors;
     const global = options.global || j$.getGlobal();
 
     const realSetTimeout = global.setTimeout;
@@ -24,7 +25,7 @@ getJasmineRequireObj().Env = function(j$) {
       new j$.MockDate(global)
     );
 
-    const globalErrors = new j$.GlobalErrors(
+    const globalErrors = new GlobalErrors(
       undefined,
       // Configuration is late-bound because GlobalErrors needs to be constructed
       // before it's set to detect load-time errors in browsers

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$.Falsy = jRequire.Falsy(j$);