Extend assertSameJsonObject to V2WorkflowTest JSON column assertions

Apply the same treatment as 414843a to the remaining assertSame calls in
V2WorkflowTest that compare array literals to MySQL JSON columns:
- signal-repair task payload (two locations)
- visibility_labels and memo on WorkflowInstance, WorkflowRun,
  WorkflowRunSummary, WorkflowHistoryEvent payload, RunDetailView output,
  HistoryExport output

These tests pass under SQLite (TEXT storage preserves PHP encoding order)
but MySQL's binary JSON storage normalizes object key order by length
then alphabetically, so the order-sensitive assertSame fails even though
the key-value set is identical.

Refs #399

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: durable-workflow-ops

tests/Feature/V2/V2WorkflowTest.php

@@ -2403,11 +2403,11 @@ public function testStartOptionsPersistVisibilityFieldsOnRunSummaryAndStartHisto
         $this->assertTrue($result->accepted());
         $this->assertIsString($runId);
         $this->assertSame('order-123', $workflow->businessKey());
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'region' => 'us-east',
             'tenant' => 'acme',
         ], $workflow->visibilityLabels());
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'customer' => [
                 'name' => 'Taylor',
                 'vip' => true,
@@ -2428,40 +2428,40 @@ public function testStartOptionsPersistVisibilityFieldsOnRunSummaryAndStartHisto
             ->firstOrFail();
 
         $this->assertSame('order-123', $instance->business_key);
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'region' => 'us-east',
             'tenant' => 'acme',
         ], $instance->visibility_labels);
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'customer' => [
                 'name' => 'Taylor',
                 'vip' => true,
             ],
             'line_items' => [123, 456],
         ], $instance->memo);
         $this->assertSame('order-123', $run->business_key);
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'region' => 'us-east',
             'tenant' => 'acme',
         ], $run->visibility_labels);
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'customer' => [
                 'name' => 'Taylor',
                 'vip' => true,
             ],
             'line_items' => [123, 456],
         ], $run->memo);
         $this->assertSame('order-123', $summary->business_key);
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'region' => 'us-east',
             'tenant' => 'acme',
         ], $summary->visibility_labels);
         $this->assertSame('order-123', $started->payload['business_key'] ?? null);
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'region' => 'us-east',
             'tenant' => 'acme',
         ], $started->payload['visibility_labels'] ?? null);
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'customer' => [
                 'name' => 'Taylor',
                 'vip' => true,
@@ -2473,31 +2473,31 @@ public function testStartOptionsPersistVisibilityFieldsOnRunSummaryAndStartHisto
         $export = $workflow->historyExport();
 
         $this->assertSame('order-123', $detail['business_key']);
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'region' => 'us-east',
             'tenant' => 'acme',
         ], $detail['visibility_labels']);
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'customer' => [
                 'name' => 'Taylor',
                 'vip' => true,
             ],
             'line_items' => [123, 456],
         ], $detail['memo']);
         $this->assertSame('order-123', $export['workflow']['business_key']);
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'region' => 'us-east',
             'tenant' => 'acme',
         ], $export['workflow']['visibility_labels']);
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'customer' => [
                 'name' => 'Taylor',
                 'vip' => true,
             ],
             'line_items' => [123, 456],
         ], $export['workflow']['memo']);
         $this->assertSame('order-123', $export['summary']['business_key']);
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'region' => 'us-east',
             'tenant' => 'acme',
         ], $export['summary']['visibility_labels']);
@@ -5597,7 +5597,7 @@ public function testRepairRecreatesMissingWorkflowTaskAfterSignalIsReceived(): v
             ->where('status', TaskStatus::Ready->value)
             ->sole();
 
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'workflow_wait_kind' => 'signal',
             'open_wait_id' => 'signal-application:' . $signalRecord->id,
             'resume_source_kind' => 'workflow_signal',
@@ -5688,7 +5688,7 @@ public function testTaskWatchdogRecreatesMissingWorkflowTaskAfterSignalIsReceive
             ->where('status', TaskStatus::Ready->value)
             ->sole();
 
-        $this->assertSame([
+        $this->assertSameJsonObject([
             'workflow_wait_kind' => 'signal',
             'open_wait_id' => 'signal-application:' . $signalRecord->id,
             'resume_source_kind' => 'workflow_signal',