Update and verify Blaze SDK + Yaci Store integration guide

### Page or section

website/docs/guides/blaze-yaci-store-integration.md

### Issue description

#### Summary
Ensure the `Blaze SDK + Yaci DevKit` integration guide is fully up-to-date with the latest versions of `@blaze-cardano/sdk` and Yaci DevKit releases.

#### Tasks
- [ ] Verify `provider.url` override pattern with the latest Blaze SDK release.
- [ ] Confirm Yaci Store endpoint compatibility for UTXO reads.
- [ ] Ensure proper navigation indexing in `website/docusaurus.config.js` / sidebar.

#### Acceptance Criteria
- Code snippets execute without errors.
- Internal links to Yaci DevKit and Blaze documentation work correctly.

### Proposed change

_No response_

### Checks

- [x] I searched existing issues and discussions
- [x] This is about documentation (not a feature request or bug)

Read website/docs/guides/blaze-yaci-store-integration.md first, then inspect website/docusaurus.config.js and the sidebar configuration. Check the latest @blaze-cardano/sdk and Yaci DevKit releases, verify the provider.url pattern and UTXO endpoint, and validate the guide’s snippets and internal links. Done means the guide is current, executable, and properly indexed.

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