Fix state carrying in the Client

When I was removing all the pass-by-reference instances, I have accidentally broken state carrying.
We have previously been relying on mutating the values passed by reference and once those references were removed we needed to pass the explicitly.
I did so in the recursion, but missed the innermost callback that is passed from outside the `intercept()` method.
This resulted in losing metadata accumulated accross multiple interceptors.
The `Client` has now been updated to properly preserve the state.

Author: Garry Filakhtov

src/Grphp/Client.php

@@ -64,7 +64,12 @@ public function call(Message $request, string $method, array $metadata = [], arr
     {
         $metadata = array_merge($this->buildAuthenticationMetadata(), $metadata);
 
-        return $this->intercept($this->interceptors, $request, $method, $metadata, $options, fn () =>
+        return $this->intercept($this->interceptors, $request, $method, $metadata, $options, fn (
+            string $method,
+            Message $request,
+            array $metadata,
+            array $options,
+        ) =>
             $this->config->getStrategy()->execute(new Request(
                 $this->config,
                 $method,
@@ -127,7 +132,7 @@ private function buildAuthenticationMetadata(): array
      * Intercept the call with the registered interceptors for the client
      *
      * @param array<Interceptor> $interceptors
-     * @param callable(): Response $callback
+     * @param callable(string, Message, array, array): Response $callback
      */
     private function intercept(
         array $interceptors,
@@ -139,7 +144,7 @@ private function intercept(
     ): Response {
         $i = array_shift($interceptors);
         if (!$i) {
-            return $callback();
+            return $callback($method, $request, $metadata, $options);
         }
 
         $i->setRequest($request);