Open Sans is not available font

I need to use Open Sans font and have found examples of it being used without having to import the font (like <link href="" rel="stylesheet"> ). Is there a version of GoJS where I can use Open Sans without having to import it? I have the font defined as:

font: '10pt "Open Sans"'

but it shows up as the default font:
Screen Shot 2022-09-29 at 3.50.23 PM

sorry if this has already been answered! Thank you!

Many browsers do not have built-in support for Open Sans, so unless you can limit your audience to those browsers that do have it built-in, you’re going to have to load the font in your HTML page.

We recommend waiting to initialize the Diagram until after fonts have loaded.