Fix: make __ob__ unenumerable and enable createComponent() accept tuple props.

[wjw99830]

Current nonReactive will put a __ob__ property to avoid reactivity in observe function, but in some clone functions, recursive references will throw error or make stack overflow such as JSON.stringify and vue-echarts.

[wjw99830]

Example:

<template>
    <vue-echarts :options="nonReactiveOptions"></vue-echarts>
</template>
<script>
export default {
    setup() {
        const nonReactiveOptions = {};
        return { nonReactiveOptions };
    },
};
</script>

[wjw99830]

#146
Current createComponent() couldn't accept options with tuple props:

createComponent({
  props: ['prop1', 'prop2'],
});

Now it would work fine when props: ['prop1', 'prop2'] as const.

[pikax]

can you add some tests to that?

EDIT: Can you break down this into 2 PRs? since they are unrelated

[wjw99830]

split this to __ob__ and tuple props