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.

Written by the indexing model from the issue text.