phpstan: drop orphan @phpstan-ignore on Facade setter

ECS auto-fix in 8979b5f restructured the surrounding test scaffolding,
which incidentally cleared the type-mismatch PHPStan was flagging on the
Facade::setFacadeApplication call. PHPStan level 0 then errored with
"No error to ignore is reported on line 77," failing the quality gate.
Drop the now-stale ignore directive.

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

Author: durable-workflow-ops

tests/Unit/V2/VersionMarkerWireFormatTest.php

@@ -73,7 +73,6 @@ protected function setUp(): void
         // same process are not affected by our minimal container.
         $this->priorFacadeApp = \Illuminate\Support\Facades\Facade::getFacadeApplication();
         \Illuminate\Support\Facades\Facade::clearResolvedInstances();
-        // @phpstan-ignore-next-line argument.type — Facade accepts any bound container at runtime.
         \Illuminate\Support\Facades\Facade::setFacadeApplication($container);
     }