fix import file size + extension validation

[nicoecheza]

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Deploying js-sdk-toolchain with    Cloudflare Pages

Latest commit:	0bd5e91
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Preview URL:	https://7ea3d4ba.js-sdk-toolchain.pages.dev
Branch Preview URL:	https://fix-several-2.js-sdk-toolchain.pages.dev

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Test this pull request

• The @dcl/sdk package can be tested in scenes by running

  npm install "https://sdk-team-cdn.decentraland.org/@dcl/js-sdk-toolchain/branch/fix/several-2/dcl-sdk-7.7.3-13144529791.commit-c2b7b70.tgz"

• To test with npx init

  export SDK_COMMANDS="https://sdk-team-cdn.decentraland.org/@dcl/js-sdk-toolchain/branch/fix/several-2/dcl-sdk-commands-7.7.3-13144529791.commit-c2b7b70.tgz"
  npx $SDK_COMMANDS init

• The @dcl/inspector package can be tested by visiting this url

  • Or by installing it via NPM

  npm install "https://sdk-team-cdn.decentraland.org/@dcl/js-sdk-toolchain/branch/fix/several-2/@dcl/inspector/dcl-inspector-7.7.3-13144529791.commit-c2b7b70.tgz"

• The /changerealm command to test test in-world

  /changerealm https://sdk-team-cdn.decentraland.org/ipfs/fix/several-2-e2e
  

• You can preview this build entering:
  https://playground.decentraland.org/?sdk-branch=fix/several-2