fix: copy original diagnostic message

[MFA-G]

Summary

• Pass the original TypeScript diagnostic message to the copy-error action in hover and sidebar output
• Keep symbol-link enriched messages only for rendered/translation content, so clipboard text no longer includes the rendered HTML link markup

Fixes #220

Validation

• npm run build --workspace @pretty-ts-errors/utils
• npm run build --workspace @pretty-ts-errors/formatter
• npm run build --workspace @pretty-ts-errors/vscode-formatter
• npm run lint --workspace @pretty-ts-errors/vscode-formatter
• npm run test --workspace @pretty-ts-errors/vscode-formatter

Note: full npm run test starts the VS Code extension integration test and cannot complete in this headless cron environment because Electron reports Missing X server or $DISPLAY.

[kevinramharak]

I was not aware the fix was this simple, looks great.

[kevinramharak]

@MFA-G Thank you for your contribution, i'm not sure when @yoavbls will be able to create a new release. This isn't critical and since there have been no reports, I think this feature is not used very often, so I don't think it has any urgency.

[yoavbls]

Thank you!
I don't see an urgency either but I definitely can publish a new release if needed