chore(lib-storage): stop bundling fs in browsers

[AllanZhengYP]

Webpack5 fails when bundler lib-storage because it requires 'fs' module. This change explicitly disable bundling fs module in browsers.

Issue

When bundling code bellow with Webpack 5:

import { S3Client } from "@aws-sdk/client-s3";
import { Upload } from "@aws-sdk/lib-storage";

const Bucket = "xxx";
const Body = "xxx"

const s3 = new S3Client({
  credentials: {
    accessKeyId: "key",
    secretAccessKey: "secret"
  },
  region: "us-west-2"
});

const upload = new Upload({
  client: s3,
  params: {
    Bucket,
    Key: "xxx",
    Body
  }
})

upload.done().then(console.log).catch(console.error)

Webpack fail to bundle it out-of-box:

Module not found: Error: Can't resolve 'fs' in '/xxx/workspace/tmp/sdk-test/lib-dynamodb'

This change fix the issue.

Additional context

Add any other context about the PR here.

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[codecov-commenter]

Codecov Report

Merging #2818 (4067730) into main (4986bab) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #2818   +/-   ##
=======================================
  Coverage   60.17%   60.17%           
=======================================
  Files         548      548           
  Lines       28592    28592           
  Branches     7000     7000           
=======================================
  Hits        17204    17204           
  Misses      11388    11388           

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[github-actions]

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