Drop RouteMatch::withArguments(), use the constructor directly

The helper had a single caller (Http::execute() updating the
arguments map after the action's params resolve) and the constructor
already accepts \$arguments. Inline.

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

Author: loks0n

src/Http/Http.php

@@ -640,7 +640,7 @@ public function execute(Route $route, Request $request, Response $response): sta
                 foreach ($route->getParams() as $name => $param) {
                     $resolved[$name] = $arguments[$param['order']] ?? null;
                 }
-                $match = $match->withArguments($resolved);
+                $match = new RouteMatch($match->route, $match->path, $resolved);
                 $this->setContext('match', fn() => $match);
 
                 \call_user_func_array($route->getAction(), $arguments);

src/Http/RouteMatch.php

@@ -25,17 +25,4 @@ public function __construct(
         public readonly string $path,
         public readonly array $arguments = [],
     ) {}
-
-    /**
-     * Return a copy of this match with the resolved-argument map replaced.
-     * Used by the framework once the action's parameters have been
-     * validated, so subsequent shutdown / error hooks can read the same
-     * values the action received.
-     *
-     * @param array<string, mixed> $arguments
-     */
-    public function withArguments(array $arguments): self
-    {
-        return new self($this->route, $this->path, $arguments);
-    }
 }