Firestore - collectionChanges function not emitting empty array when not elements present in queried collection

**Angular:**
13.3.11

**Firebase:**
9.8.4

**AngularFire:**
7.4.1

**Other (e.g. Ionic/Cordova, Node, browser, operating system):**
Node: 14.19.0
Maxc OS: 12.3.1
Chrome (latest)

### How to reproduce these conditions

`
const elements = [1,2,3];
`

`
const surveyReferencesQuery = query(
collection(
this.afs,
'surveyReferences'
) as CollectionReference,
where('companyId', 'in', elements)
);`

`
return collectionChanges(
surveyReferencesQuery
).pipe(
tap((c) =>
console.log(
'collectionChanges',
c.map((s) => [
s.type,
s.doc.id,
s.doc.data(),
])
)
)
);`

### Expected behavior

Should emit empty array

### Actual behavior

Not emitting anything until documents in collection

从 collectionChanges 入口点开始，使用空的 surveyReferences 集合复现提供的 Firestore 查询。将 observable 的初始行为与预期发出空数组的行为进行比较；当查询在匹配的文档存在之前发出空数组时，即表示完成。

由索引模型根据 Issue 内容生成。