fix(zone.js): disable wrap uncaught promise rejection should handle primitive value (#38476)

Close #38334.

zone.js provides a flag DISABLE_WRAPPING_UNCAUGHT_PROMISE_REJECTION to let zone.js
throw the original error instead of wrap it when uncaught promise rejection found.
But the rejection value could be anything includes primitive value such as number.
In that case, we should not attach any additional properties to the value.

PR Close #38476

packages/zone.js/test/common/promise-disable-wrap-uncaught-promise-rejection.spec.ts

@@ -42,9 +42,9 @@ describe('disable wrap uncaught promise rejection', () => {
     setTimeout((): any => null);
     setTimeout(() => {
       expect(promiseError).toBe(error);
-      expect((promiseError as any)['rejection']).toBe(error);
-      expect((promiseError as any)['zone']).toBe(zone);
-      expect((promiseError as any)['task']).toBe(task);
+      expect((promiseError as any)['rejection']).toBe(undefined);
+      expect((promiseError as any)['zone']).toBe(undefined);
+      expect((promiseError as any)['task']).toBe(undefined);
       done();
     });
   });
@@ -76,4 +76,27 @@ describe('disable wrap uncaught promise rejection', () => {
       done();
     });
   });
+
+  it('should print original information when a primitive value is used for rejection', (done) => {
+    let promiseError: number|null = null;
+    Zone.current
+        .fork({
+          name: 'promise-error',
+          onHandleError: (delegate: ZoneDelegate, current: Zone, target: Zone, error: any):
+              boolean => {
+                promiseError = error;
+                delegate.handleError(target, error);
+                return false;
+              }
+        })
+        .run(() => {
+          Promise.reject(42);
+          expect(promiseError).toBe(null);
+        });
+    setTimeout((): any => null);
+    setTimeout(() => {
+      expect(promiseError).toBe(42);
+      done();
+    });
+  });
 });