fix: trigger conditions on drag n drop

[cazala]

This PR fixes conditions by replacing {selfEntity} on drag n dropped items. It also hides the operation dropdown when there are less than 2 conditions, since it's not necessary on that scenario.

[cloudflare-workers-and-pages]

Deploying with    Cloudflare Pages

Latest commit:	e2f7d56
Status:	✅  Deploy successful!
Preview URL:	https://67410ec7.js-sdk-toolchain.pages.dev
Branch Preview URL:	https://fix-conditions.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/fix/conditions/dcl-sdk-7.3.16-6253262416.commit-82b1675.tgz"

• To test with npx init

  export SDK_COMMANDS="https://sdk-team-cdn.decentraland.org/@dcl/js-sdk-toolchain/branch/fix/conditions/dcl-sdk-commands-7.3.16-6253262416.commit-82b1675.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/conditions/@dcl/inspector/dcl-inspector-7.3.16-6253262416.commit-82b1675.tgz"

• The /changerealm command to test test in-world

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

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

[codecov]

Codecov Report

Patch coverage: 50.00% and project coverage change: -0.01% ⚠️

Comparison is base (0785c75) 72.61% compared to head (b74779c) 72.60%.

❗ Current head b74779c differs from pull request most recent head e2f7d56. Consider uploading reports for the commit e2f7d56 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #742      +/-   ##
==========================================
- Coverage   72.61%   72.60%   -0.01%     
==========================================
  Files         364      364              
  Lines       12135    12139       +4     
  Branches     1644     1644              
==========================================
+ Hits         8812     8814       +2     
- Misses       3136     3138       +2     
  Partials      187      187              

Files Changed	Coverage Δ
...@dcl/inspector/src/lib/sdk/operations/add-child.ts	91.22% <50.00%> (-3.12%)	⬇️

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