Using with Angular 17 SSR -> document is not defined on initializeAppCheck

先閱讀 docs/app-check.md，並追蹤 @angular/fire/fesm2022/angular-fire.mjs 中顯示的 initializeAppCheck 呼叫，同時檢查回報的 Firebase App Check 堆疊追蹤中的 document 存取。完成的標準是 Angular SSR 和預先渲染能在沒有 document 錯誤的情況下完成，同時瀏覽器中的 App Check 繼續初始化。

Version info

Angular:
17.0.8

Firebase:
10.7.1

AngularFire:
17.0.0

Other (e.g. Ionic/Cordova, Node, browser, operating system):
Node 18, Ionic 7, MacOS

How to reproduce these conditions

Steps to set up and reproduce

1. New Angular 17 project
2. ng add @angular/fire@17
3. ng add @angular/ssr
4. Set up App Check as per https://github.com/angular/angularfire/blob/master/docs/app-check.md
5. ng build

Debug output

⠇ Building...
ReferenceError: document is not defined
    at makeDiv (/app/.angular/prerender-root/node_modules/@firebase/app-check/dist/esm/index.esm2017.js:1119:26)
    at initializeV3 (/app/.angular/prerender-root/node_modules/@firebase/app-check/dist/esm/index.esm2017.js:1064:19)
    at _ReCaptchaV3Provider.initialize (/app/.angular/prerender-root/node_modules/@firebase/app-check/dist/esm/index.esm2017.js:1255:9)
    at _activate (/app/.angular/prerender-root/node_modules/@firebase/app-check/dist/esm/index.esm2017.js:1543:20)
    at initializeAppCheck (/app/.angular/prerender-root/node_modules/@firebase/app-check/dist/esm/index.esm2017.js:1498:5)
    at <anonymous> (app/.angular/prerender-root/c56c3be0-e454-4b23-bf7d-d028ecf276ec/node_modules/@angular/fire/fesm2022/angular-fire.mjs:216:44)
    at <anonymous> (/app/.angular/prerender-root/c56c3be0-e454-4b23-bf7d-d028ecf276ec/node_modules/@angular/fire/fesm2022/angular-fire.mjs:148:57)
    at _ZoneDelegate.invoke (/app/.angular/prerender-root/node_modules/zone.js/fesm2015/zone.js:368:26)
    at _Zone.run (/app/.angular/prerender-root/node_modules/zone.js/fesm2015/zone.js:129:43)
    at _NgZone.runOutsideAngular (/app/.angular/prerender-root/node_modules/@angular/core/fesm2022/core.mjs:1461
An unhandled exception occurred: document is not defined

Expected behavior

AngularFire should check if rendering on a browser before calling App Check code and RecaptchaV3 (which relies on document being available)

Actual behavior

No check is done, so when providing App Check, this above error occurs as soon as pre-rendering on the server happens and document is accessed but isn't available due to not running in a browser