Fix the import of node-fetch polyfill

[jamesdaniels]

Storage and FirestoreLite were importing node-fetch as a namespace, rather than pulling the default fetch function and using that.

// import * as nodeFetch from 'node-fetch';
Object [Module] {
  default: [Getter],
  Headers: [Getter],
  Request: [Getter],
  Response: [Getter],
  FetchError: [Getter]
}

// import nodeFetch from 'node-fetch';
[Function: fetch] {
  isRedirect: [Function (anonymous)],
  Promise: [Function: ZoneAwarePromise] {
    toString: [Function (anonymous)],
    resolve: [Function (anonymous)],
    reject: [Function (anonymous)],
    race: [Function (anonymous)],
    all: [Function (anonymous)],
    allSettled: [Function (anonymous)],
    allWithCallback: [Function (anonymous)],
    __zone_symbol__uncaughtPromiseErrors: []
  }
}

This was leading to timeouts in Storage node and uncaught exceptions in Firestore Lite @firebase/firestore: Firestore (9.0.0_lite): RPC_ERROR HTTP error has no status diving in and setting a breakpoint I found this underlying error TypeError: this.fetchImpl is not a function

[changeset-bot]

🦋 Changeset detected

Latest commit: 14bf97c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 5 packages

Name	Type
@firebase/firestore	Patch
@firebase/storage	Patch
firebase	Patch
@firebase/firestore-compat	Patch
@firebase/storage-compat	Patch

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[github-actions]

Changeset File Check ✅

• No modified packages are missing from the changeset file.
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[google-oss-bot]

Size Analysis Report

Affected Products

No changes between base commit (509c18f) and head commit (396053f).

Test Logs

• Base (509c18f): https://github.com/firebase/firebase-js-sdk/actions/runs/1172380979
• Head (396053f): https://github.com/firebase/firebase-js-sdk/actions/runs/1175880976

[Feiyang1]

fyi, @schmidt-sebastian