process: unhandledRejection support more errors

Support cross realm errors where `instanceof` errors in our
unhandledRejection warning to print better error with stack traces.

lib/internal/process/promises.js

@@ -5,6 +5,7 @@ const {
   ArrayPrototypeShift,
   Error,
   ObjectDefineProperty,
+  ObjectHasOwn,
   SafeWeakMap,
 } = primordials;
 
@@ -179,14 +180,21 @@ function emitUnhandledRejectionWarning(uid, reason) {
       `(rejection id: ${uid})`
   );
   try {
-    if (reason instanceof Error) {
+    if (ObjectHasOwn(reason, 'stack')) {
       warning.stack = reason.stack;
       process.emitWarning(reason.stack, unhandledRejectionErrName);
     } else {
       process.emitWarning(
         noSideEffectsToString(reason), unhandledRejectionErrName);
     }
-  } catch {}
+  } catch {
+    try {
+      process.emitWarning(
+        noSideEffectsToString(reason), unhandledRejectionErrName);
+    } catch {
+      // Ignore.
+    }
+  }
 
   process.emitWarning(warning);
 }
@@ -232,7 +240,7 @@ function processPromiseRejections() {
     try {
       switch (unhandledRejectionsMode) {
         case kStrictUnhandledRejections: {
-          const err = reason instanceof Error ?
+          const err = ObjectHasOwn(reason, 'stack') ?
             reason : generateUnhandledRejectionError(reason);
           // This destroys the async stack, don't clear it after
           triggerUncaughtException(err, true /* fromPromise */);
@@ -259,7 +267,7 @@ function processPromiseRejections() {
         case kThrowUnhandledRejections: {
           const handled = emit(reason, promise, promiseInfo);
           if (!handled) {
-            const err = reason instanceof Error ?
+            const err = ObjectHasOwn(reason, 'stack') ?
               reason : generateUnhandledRejectionError(reason);
               // This destroys the async stack, don't clear it after
             triggerUncaughtException(err, true /* fromPromise */);