fix(api): fix credential type handling and rebuild subscription transaction safety (#30242)

Signed-off-by: NeatGuyCoding <15627489+NeatGuyCoding@users.noreply.github.com>

api/services/plugin/plugin_parameter_service.py

@@ -146,7 +146,7 @@ class PluginParameterService:
                 provider,
                 action,
                 resolved_credentials,
-                CredentialType.API_KEY.value,
+                original_subscription.credential_type or CredentialType.UNAUTHORIZED.value,
                 parameter,
             )
             .options