Trigger OAuth token refresh encrypts/decrypts subscription credentials with the OAuth client schema

当 Dify 自托管实例使用支持 OAuth2 订阅的 Trigger 插件,且订阅凭据结构中包含 access_token 、 refresh_token 等 secret-input 字段时,触发 OAuth token 刷新会出现“加密/解密所用 schema 不一致”的问题,即 Trigge

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