fix: update comments component incase of no provider

[talhatahir]

Incase if someone does not have any commenting platform enabled, the code will still show the Load Comments button.
This PR fixes it and only shows the Load Comments button if a commenting platform is provided.

[vercel]

Someone is attempting to deploy a commit to a Personal Account owned by @timlrx on Vercel.

@timlrx first needs to authorize it.

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
tailwind-nextjs-starter-blog	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 4, 2024 1:49pm

[talhatahir]

@timlrx please be so kind to have a look at this PR.

[timlrx]

There's an error in the deployed build:

Error: 
  x An object member cannot be declared optional
    ,-[/vercel/path0/components/Comments.tsx:11:1]

Could you fix it and ensure that it builds without error?

[talhatahir]

@timlrx Fixed it! Thanks ✌️

[talhatahir]

@timlrx can you have a look

[timlrx]

Thanks for the fix!