On your home page, the site-title block in the site header area should be an h1 tag, no matter what you set it to be in the site editor.
On interior pages, the site-title block in the header should be an p tag, no matter what you set it to be in the site editor.
Any other instance of the site-title block you add to a page should not be affected by this. So if you add a site-title block to a page's content area, and set it to be an h4, it will remain an h4 when you view the published page.
What does this do/fix?
Fixes our site title modification script and ensures that site title blocks are properly tagged on all pages
QA
Links to relevant issues
Tests