fix: treat mobile Firefox on iOS as mobile Safari

Firefox on iOS uses WebKit engine and should be treated similarly
to Safari on iOS for compatibility purposes.

Fixes: #58656

Author: ionodeionode

lib/private/AppFramework/Http/Request.php

@@ -40,7 +40,7 @@ class Request implements \ArrayAccess, \Countable, IRequest {
 	public const USER_AGENT_CHROME = '/^Mozilla\/5\.0 \([^)]+\) AppleWebKit\/[0-9.]+ \(KHTML, like Gecko\)( Ubuntu Chromium\/[0-9.]+|) Chrome\/[0-9.]+ (Mobile Safari|Safari)\/[0-9.]+( (Vivaldi|Brave|OPR)\/[0-9.]+|)$/';
 	// Safari User Agent from http://www.useragentstring.com/pages/Safari/
 	public const USER_AGENT_SAFARI = '/^Mozilla\/5\.0 \([^)]+\) AppleWebKit\/[0-9.]+ \(KHTML, like Gecko\) Version\/[0-9.]+ Safari\/[0-9.A-Z]+$/';
-	public const USER_AGENT_SAFARI_MOBILE = '/^Mozilla\/5\.0 \([^)]+\) AppleWebKit\/[0-9.]+ \(KHTML, like Gecko\) Version\/[0-9.]+ (Mobile\/[0-9.A-Z]+) Safari\/[0-9.A-Z]+$/';
+	public const USER_AGENT_SAFARI_MOBILE = '/^Mozilla\/5\.0 \([^)]+\) AppleWebKit\/[0-9.]+ \(KHTML, like Gecko\)( Version\/[0-9.]+ (Mobile\/[0-9.A-Z]+) Safari\/[0-9.A-Z]+| FxiOS\/[0-9.]+.*Safari\/[0-9.]+)$/';
 	// Android Chrome user agent: https://developers.google.com/chrome/mobile/docs/user-agent
 	public const USER_AGENT_ANDROID_MOBILE_CHROME = '#Android.*Chrome/[.0-9]*#';
 	public const USER_AGENT_FREEBOX = '#^Mozilla/5\.0$#';