Cannot set user id and user property at the same time

### Version info

**Angular:** 12.2.0

**Firebase:** 9.6.6

**AngularFire:** 7.2.1

### Expected behavior

I need to set user id and a user property after a user has logged in. User property is product_amount, and the user belongs to different audiences based on the product_amount.

### Actual behavior

Every user is counted to belong to two audiences. After user has logged in, I set `this.analytics.setUserId(id);`, which causes product_amount to be zero. After user id is set, I set user properties with
```
this.analytics.setUserProperties(
{ product_amount: this.product_amount },
{ global: true }
);
```
which logs the real product amount.

It is not possible to set user id and user properties at the same time. That means initial user property is always the wrong one.

首先，使用 Angular 12.2.0、Firebase 9.6.6 和 AngularFire 7.2.1，通过 setUserId 和 setUserProperties 设置 product_amount 属性来复现该问题。检查 AngularFire 的 analytics 入口点和 Firebase Analytics 的行为，以确定为什么设置 ID 会重置该属性；当两个值都保持正确且受众分配准确时，即表示完成。

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