fix(openai): remove array cast from metadata (#387)

Author: ChrisB-TL

src/Providers/OpenAI/Handlers/Stream.php

@@ -220,7 +220,7 @@ protected function sendRequest(Request $request): Response
                     ], Arr::whereNotNull([
                         'temperature' => $request->temperature(),
                         'top_p' => $request->topP(),
-                        'metadata' => (array) $request->providerOptions('metadata'),
+                        'metadata' => $request->providerOptions('metadata'),
                         'tools' => ToolMap::map($request->tools()),
                         'tool_choice' => ToolChoiceMap::map($request->toolChoice()),
                     ]))

src/Providers/OpenAI/Handlers/Structured.php

@@ -102,7 +102,7 @@ protected function sendRequest(Request $request, array $responseFormat): ClientR
                 ], Arr::whereNotNull([
                     'temperature' => $request->temperature(),
                     'top_p' => $request->topP(),
-                    'metadata' => (array) $request->providerOptions('metadata'),
+                    'metadata' => $request->providerOptions('metadata'),
                     'response_format' => $responseFormat,
                 ]))
             );

src/Providers/OpenAI/Handlers/Text.php

@@ -114,7 +114,7 @@ protected function sendRequest(Request $request): ClientResponse
                 ], Arr::whereNotNull([
                     'temperature' => $request->temperature(),
                     'top_p' => $request->topP(),
-                    'metadata' => (array) $request->providerOptions('metadata'),
+                    'metadata' => $request->providerOptions('metadata'),
                     'tools' => ToolMap::map($request->tools()),
                     'tool_choice' => ToolChoiceMap::map($request->toolChoice()),
                 ]))