Fix signal replay

Author: rmcdaniel

tests/Fixtures/TestParentWorkflow.php

@@ -6,10 +6,17 @@
 
 use Workflow\ActivityStub;
 use Workflow\ChildWorkflowStub;
+use Workflow\SignalMethod;
 use Workflow\Workflow;
 
 class TestParentWorkflow extends Workflow
 {
+    #[SignalMethod]
+    public function ping(): void
+    {
+        // Do nothing
+    }
+
     public function execute()
     {
         $otherResult = yield ChildWorkflowStub::make(TestChildWorkflow::class);

tests/Unit/WorkflowTest.php

@@ -255,6 +255,14 @@ public function testParentPending(): void
                 'result' => Serializer::serialize('activity'),
             ]);
 
+        $storedParentWorkflow->signals()
+            ->create([
+                'method' => 'ping',
+                'arguments' => Serializer::serialize([]),
+                'created_at' => now()
+                    ->addSeconds(1),
+            ]);
+
         $childWorkflow = WorkflowStub::load(WorkflowStub::make(TestChildWorkflow::class)->id());
 
         $storedChildWorkflow = StoredWorkflow::findOrFail($childWorkflow->id());