Block: Correctly load viewStyle in the head tag when wp_should_load_block_assets_on_demand is false

[t-hamano]

Trac ticket: https://core.trac.wordpress.org/ticket/63695

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This Pull Request is for code review only. Please keep all other discussion in the Trac ticket. Do not merge this Pull Request. See GitHub Pull Requests for Code Review in the Core Handbook for more details.

[github-actions]

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[github-actions]

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[Kaycee2815]

Thanks

[t-hamano]

Oh, I re-forked the wordpress-develop repo and it seems all my submitted open PRs were closed 😂 I submitted a new PR that is equivalent to this one. #10925