chore: add more e2e tests

[cazala]

This PR adds e2e test for two use cases: dragging an asset from the file system into the canvas and making sure it is added to the entity tree, and also from the builder assets

[cloudflare-workers-and-pages]

Deploying with    Cloudflare Pages

Latest commit:	59ac6a4
Status:	✅  Deploy successful!
Preview URL:	https://872056d1.js-sdk-toolchain.pages.dev
Branch Preview URL:	https://chore-add-more-e2e-tests.js-sdk-toolchain.pages.dev

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[github-actions]

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/chore/add-more-e2e-tests/dcl-sdk-7.2.5-5415984144.commit-47fa1ec.tgz"

• To test with npx init

  export SDK_COMMANDS="https://sdk-team-cdn.decentraland.org/@dcl/js-sdk-toolchain/branch/chore/add-more-e2e-tests/dcl-sdk-commands-7.2.5-5415984144.commit-47fa1ec.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/chore/add-more-e2e-tests/@dcl/inspector/dcl-inspector-7.2.5-5415984144.commit-47fa1ec.tgz"

• The /changerealm command to test test in-world

  /changerealm https://sdk-team-cdn.decentraland.org/ipfs/chore/add-more-e2e-tests-e2e
  

• You can preview this build entering:
  https://playground.decentraland.org/?sdk-branch=chore/add-more-e2e-tests

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (d72f900) 73.37% compared to head (59ac6a4) 73.37%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #672   +/-   ##
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  Coverage   73.37%   73.37%           
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  Files         296      296           
  Lines        9815     9815           
  Branches     1277     1277           
=======================================
  Hits         7202     7202           
  Misses       2491     2491           
  Partials      122      122           

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