fix(trunks): ne pas forcer from_user si vide pour preserver le Caller ID Name dans From (v1.6.4)

src/ConfigGenerator.php

@@ -295,7 +295,7 @@ class ConfigGenerator
                 }
 
                 $context       = trim((string)($trunk['context'] ?? 'from-external')) ?: 'from-external';
-                $fromUser      = trim((string)($trunk['from_user'] ?? '')) ?: $username;
+                $fromUser      = trim((string)($trunk['from_user'] ?? ''));
                 $fromDomain    = trim((string)($trunk['from_domain'] ?? '')) ?: $host;
                 $callerId      = trim((string)($trunk['outbound_callerid'] ?? ''));
                 $sendPai       = ((int)($trunk['send_pai'] ?? 1) === 1) ? 'yes' : 'no';