Yes, it’s possible to set the Site Logo block as the Site Icon/Favicon. There is an option to “Use as site icon”. See screenshot below:

It’s also possible to set the Site Icon separately to the logo from the Customizer. To access the Customizer, navigate to the following URL for your own site (changing example.com to your domain):
https://example.com/wp-admin/customize.php?autofocus%5Bsection%5D=title_tagline
The Pro add on for Blockify also provides Site Icon settings in the Editor:

Hope that helps, let me know if you run into any issues.
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This reply was modified 2 years, 3 months ago by
Blockify.