chore: Use local api for self hosted snippets

[kyle-ssg]

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Changes

Uses admin api for SDK snippets instead of flagsmith on flagsmith url. Closes #4130

How did you test this code?

Viewed code snippets in all languages

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 19, 2024 8:06pm
flagsmith-frontend-preview	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 19, 2024 8:06pm
flagsmith-frontend-staging	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 19, 2024 8:06pm

[github-actions]

Docker builds report

Image	Build Status	Security report
ghcr.io/flagsmith/flagsmith-api-test:pr-4807	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-e2e:pr-4807	Finished ✅	Skipped
ghcr.io/flagsmith/flagsmith-api:pr-4807	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-private-cloud:pr-4807	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith-frontend:pr-4807	Finished ✅	Results ✅
ghcr.io/flagsmith/flagsmith:pr-4807	Finished ✅	Results ✅

[github-actions]

Uffizzi Ephemeral Environment deployment-57972

☁️ https://app.uffizzi.com/github.com/Flagsmith/flagsmith/pull/4807

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Testing via preview link seems to show an issue.

[matthewelwell]

I'm not sure if this is a symptom of using the preview URL, but it's showing the API URL being overridden here which I Don't think is correct?