Addon Interactions: Use unique keys when rendering array nodes in panel

[yannbf]

Closes #

What I did

This PR fixes a specific issue where if your interactions panel uses an array of classes of the same name like so

Then it throws the following error:

chunk-B3YDJJJH.js:23 Warning: Encountered two children with the same key, `{"__class__":{"name":"File"}}`. Keys should be unique so that components maintain their identity across updates. Non-unique keys may cause children to be duplicated and/or omitted — the behavior is unsupported and could change in a future version.
    at span
    at t_ (http://localhost:6006/sb-addons/interactions-9/manager-bundle.js:177:39208)
    at bt (http://localhost:6006/sb-addons/interactions-9/manager-bundle.js:177:37196)
    at span
    at ta (http://localhost:6006/sb-addons/interactions-9/manager-bundle.js:177:42581)
    at div
    at http://localhost:6006/sb-manager/chunk-B3YDJJJH.js:299:2900
    at button
    at http://localhost:6006/sb-manager/chunk-B3YDJJJH.js:299:2900
    at div
    at http://localhost:6006/sb-manager/chunk-B3YDJJJH.js:299:2900
    at div
    at http://localhost:6006/sb-manager/chunk-B3YDJJJH.js:299:2900
    at C_ (http://localhost:6006/sb-addons/interactions-9/manager-bundle.js:182:134)

Checklist for Contributors

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  MIGRATION.MD

Checklist for Maintainers

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• Make sure this PR contains one of the labels below:

  Available labels

  • bug: Internal changes that fixes incorrect behavior.
  • maintenance: User-facing maintenance tasks.
  • dependencies: Upgrading (sometimes downgrading) dependencies.
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