docs: recommend to not overwrite some keys in tsconfig

[tobiasdiez]

🔗 Linked issue

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

I hit a strange error while upgrading from rc 9 to 11 that import_meta.hot.accept was not defined. After a bit of research, I think, I hit evanw/esbuild#2294. At least after removing "target": "ES2018", from the tsconfig file everything is working smoothly now. So I added a small note to the docs that these keys shouldn't be overwritten.

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

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[pi0]

Thanks!