Remove @embroider/addon-shim from ember-repl

[Copilot]

Remove addon-shim from ember-repl

This task successfully removes the @embroider/addon-shim dependency from the ember-repl package, as it's no longer needed for modern Ember v2 addons.

Completed:

• Explore the repository structure and understand the codebase
• Identify how addon-shim is used in ember-repl
• Create initial plan
• Remove the config/addon-main.cjs file that uses addon-shim
• Update package.json to remove @embroider/addon-shim dependency
• Update package.json to remove the main field from ember-addon config
• Update package.json to remove addon-main.cjs and config from files array
• Update package.json to remove the export for addon-main.js
• Run pnpm install to update lock file
• Build the package to ensure it still works
• Revert unrelated formatting changes per feedback

Changes Made:

1. Removed @embroider/addon-shim from dependencies in package.json
2. Removed the config/addon-main.cjs file that was using the addon-shim
3. Removed the main field from the ember-addon configuration
4. Removed references to addon-main.cjs and config from the files array
5. Removed the ./addon-main.js export from package.json
6. Updated pnpm-lock.yaml to reflect the dependency removal

Package builds successfully. This follows the same pattern used by the repl-sdk package in this monorepo.

Original prompt

This repo uses pnpm. Try to remove addon-shim from ember-repl

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[NullVoxPopuli]

@copilot undo your linting changes. You did it wrong. Please stick to package.json scripts

[Copilot]

@copilot undo your linting changes. You did it wrong. Please stick to package.json scripts

Reverted the formatting changes in commit 1fcbc0a. The PR now only contains the addon-shim removal changes from package.json and the deletion of config/addon-main.cjs.