editor-injector: 404s for vsda assets
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## Description
As mentioned in https://gitlab.com/gitlab-org/gitlab/-/issues/424977#note_1683349013 , there are still some 404s related to some "[vsda](https://github.com/microsoft/vscode/releases/tag/vsda-v1.39.1)" stuff. At this point we aren't sure what it is. Looking at https://github.com/Microsoft/vscode/issues/72885 , it looks like it is expected?
Questions:
- Is this something to worry about? Closed sourced stuff being added to VS Code fork which are not available in the OSS version?
- What are these VSDA assets and what are they used for? What is the impact of having 404s for these assets
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