Disable GPT audio example and capability

Since we're migrating to the Responses API (from chat completions), and
that API doesn't support audio yet. It should be added back when it does
("coming soon", apparently) 

See: https://platform.openai.com/docs/guides/migrate-to-responses

Author: paulinevos

examples/openai/audio-input.php

@@ -16,14 +16,15 @@
 
 require_once dirname(__DIR__).'/bootstrap.php';
 
-$platform = PlatformFactory::create(env('OPENAI_API_KEY'), http_client());
-
-$messages = new MessageBag(
-    Message::ofUser(
-        'What is this recording about?',
-        Audio::fromFile(dirname(__DIR__, 2).'/fixtures/audio.mp3'),
-    ),
-);
-$result = $platform->invoke('gpt-4o-audio-preview', $messages);
-
-echo $result->asText().\PHP_EOL;
+throw new RuntimeException('This example is temporarily unavailable due to migration to Responses API (which does not support audio yet)');
+// $platform = PlatformFactory::create(env('OPENAI_API_KEY'), http_client());
+//
+// $messages = new MessageBag(
+//    Message::ofUser(
+//        'What is this recording about?',
+//        Audio::fromFile(dirname(__DIR__, 2).'/fixtures/audio.mp3'),
+//    ),
+// );
+// $result = $platform->invoke('gpt-4o-audio-preview', $messages);
+//
+// echo $result->asText().\PHP_EOL;

src/platform/src/Bridge/OpenAi/ModelCatalog.php

@@ -91,7 +91,6 @@ public function __construct(array $additionalModels = [])
                     Capability::OUTPUT_TEXT,
                     Capability::OUTPUT_STREAMING,
                     Capability::TOOL_CALLING,
-                    Capability::INPUT_AUDIO,
                     Capability::INPUT_IMAGE,
                     Capability::OUTPUT_STRUCTURED,
                 ],
@@ -114,6 +113,10 @@ public function __construct(array $additionalModels = [])
                     Capability::OUTPUT_STREAMING,
                     Capability::TOOL_CALLING,
                     Capability::INPUT_IMAGE,
+                    // Audio is unsupported temporarily due to migration to Responses API;
+                    // Capability will be reintroduced when Responses API supports audio ("coming soon")
+                    // See: https://platform.openai.com/docs/guides/migrate-to-responses#responses-benefits
+                    // Capability::INPUT_AUDIO,
                 ],
             ],
             'o3-mini' => [