revert: remove reasoning capability

src/lib/components/workspace/Models/Capabilities.svelte

@@ -11,17 +11,13 @@
 		usage: $i18n.t(
 			'Sends `stream_options: { include_usage: true }` in the request.\nSupported providers will return token usage information in the response when set.'
 		),
-		citations: $i18n.t('Displays citations in the response'),
-		reasoning: $i18n.t(
-			'Sends `enable_thinking: true` in the request. \nSupported toggle providers will return thinking content'
-		)
+		citations: $i18n.t('Displays citations in the response')
 	};
 
 	export let capabilities: {
 		vision?: boolean;
 		usage?: boolean;
 		citations?: boolean;
-		reasoning?: boolean;
 	} = {};
 </script>