请问：vben+ vue3 ApiSelect 若下拉只有一个选项直接选中，若有多个默认为空可以自行选择，怎么处理?

报错警告：runtime-core.esm-bundler.js:38 [Vue warn]: Avoid app logic that relies on enumerating keys on a component instance. The keys will be empty in production mode to avoid performance overhead.

判断下拉框的length,为1时给下拉框赋值