Fix PAYLOAD_TOO_LARGE case label in HttpCode::codeFromString

Semicolon instead of colon made the case a no-op, causing the method
to throw UnexpectedValueException instead of returning 413.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: carlbennett

src/Libraries/Core/HttpCode.php

@@ -170,7 +170,7 @@ public static function codeFromString(string $value): int
             case 'OKAY': return self::HTTP_OK;
             case 'OTHER': return self::HTTP_SEE_OTHER;
             case 'PARTIAL_CONTENT': return self::HTTP_PARTIAL_CONTENT;
-            case 'PAYLOAD_TOO_LARGE'; return self::HTTP_PAYLOAD_TOO_LARGE;
+            case 'PAYLOAD_TOO_LARGE': return self::HTTP_PAYLOAD_TOO_LARGE;
             case 'PERMANENT_REDIRECT': return self::HTTP_PERMANENT_REDIRECT;
             case 'PERMANENT': return self::HTTP_MOVED_PERMANENTLY;
             case 'PRECONDITION_FAILED': return self::HTTP_PRECONDITION_FAILED;