Builds broken following removal of design token css.

[peterwilsoncc]

Description

In #75879 the file packages/theme/src/style.scss was deleted from the repository.

This caused the build to break without manual intervention due to incorrect dependencies.

The work around for this is to run git clean -fdx . after backing up your editor config files. The need for manual intervention indicates that the build is broken and isn't cleaning up after itself appropriately.

Step-by-step reproduction instructions

1. Checkout bedcb4d
2. Run nvm use; npm ci; npm run build
3. Load the editor, observe it's all styled correctly
4. Checkout trunk
5. Run nvm use; npm ci; npm run build
6. Load the editor, observe the lack of styles
7. back up editor config files
8. Run git clean -fdx .
9. Run npm i; npm run build
10. Observe the styles are loaded correctly

Screenshots, screen recording, code snippet

No response

Environment info

No response

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes

Please confirm which theme type you used for testing.

• Block
• Classic
• Hybrid (e.g. classic with theme.json)
• Not sure

[Mamaduka]

cc @WordPress/gutenberg-components

[mirka]

The exact folder that needed to be deleted in this case is build/styles/theme/ (the root build, not the ones in each package). I haven't looked into it yet, but we may be missing a step to clean the build folder. Not sure if that's intentional or not.