fix: 修复禁用平台的账号切换功能，历史创建的切换账号依然可以正常切换 (#10560)

Co-authored-by: feng <1304903146@qq.com>

apps/authentication/serializers/connect_token_secret.py

@@ -46,7 +46,7 @@ class _SimpleAccountSerializer(serializers.ModelSerializer):
 
 
 class _ConnectionTokenAccountSerializer(serializers.ModelSerializer):
-    su_from = _SimpleAccountSerializer(required=False, label=_('Su from'))
+    su_from = serializers.SerializerMethodField(label=_('Su from'))
     secret_type = LabeledChoiceField(choices=SecretType.choices, required=False, label=_('Secret type'))
 
     class Meta:
@@ -56,6 +56,14 @@ class _ConnectionTokenAccountSerializer(serializers.ModelSerializer):
             'secret', 'su_from', 'privileged'
         ]
 
+    @staticmethod
+    def get_su_from(account):
+        su_enabled = account.asset.platform.su_enabled
+        su_from = account.su_from
+        if not su_from or not su_enabled:
+            return
+        return _SimpleAccountSerializer(su_from).data
+
 
 class _ConnectionTokenGatewaySerializer(serializers.ModelSerializer):
     account = _SimpleAccountSerializer(