Fix sitemap grid render incorrect base urls for multiple stores

[nntoan]

Description

In Magento/Sitemap/Block/Adminhtml/Grid/Renderer/Link.php, we've created new instance for \Magento\Sitemap\Model\Sitemap. That lead to $sitemap->getStoreId() is NULL all the time, the sitemap.xml generated still using correct store id because of we load $sitemap instance from the collection which retrieve data directly from the database.

So to fix this issue, we should set the store id for the current sitemap object based on store id retrieved from the current row.

Fixed Issues (if relevant)

1. Sitemap grid display incorrect base URL in the grid if using multiple stores #17999: Sitemap grid display incorrect base URL in the grid if using multiple stores

Manual testing scenarios

1. Setup multiple store views with different base urls, (default config base url must be different with all other store view base url)
2. Go to Marketing > SEO & Search > Site Map
3. Check if Actual Result in Sitemap grid display incorrect base URL in the grid if using multiple stores #17999 does not happen. It suppose to display something like this:
   

Contribution checklist

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with unit/integration tests (if applicable)
• All automated tests passed successfully (all builds on Travis CI are green)

[magento-cicd2]

All committers have signed the CLA.

[magento-engcom-team]

Hi @nntoan. Thank you for your contribution
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[nntoan]

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[magento-engcom-team]

Hi @sidolov, thank you for the review.
ENGCOM-3008 has been created to process this Pull Request

[magento-engcom-team]

@nntoan thank you for contributing. Please accept Community Contributors team invitation here to gain extended permissions for this repository.

[magento-engcom-team]

Hi @nntoan. Thank you for your contribution.
We will aim to release these changes as part of 2.2.8.
Please check the release notes for final confirmation.

Please, consider to port this solution to 2.3 release line.
You may use Porting tool to port commits automatically.