Fix custom font-family's not loaded on text nodes

[maximgeerinck]

Summary

Looks for text nodes in an SVG and adds the font-family attribute whenever a font-family was added. This will make sure that custom fonts load properly on svg elements.

This PR fixes/implements the following bugs/features

• Custom font on SVG element is not correct #1463
• SVG text element with @font-face family renders with incorrect font #1709

Solves the issues listed above

Test plan (required)
Add a custom font with @font-face, use the custom font in a css class and add the class to a svg text element

Code formatting

Please make sure that code adheres to the project code formatting. Running npm run format will automatically format your code correctly.

Closing issues

closes #1463, #1709

[bogdan-matsiakh]

@niklasvh, will you merge this PR?

[kidar2]

When it will be merged?

[IAmRC1]

I cloned the repo and can't find this file NodeContainer.js under src directory, can you help?

[nidi3]

@IAmRC1 It's in svg-element-container.ts

[nidi3]

I released this together with #2132 as "@nidi/html2canvas": "1.0.0-rc.12"

[goliney]

@nidi3 the @nidi/html2canvas package doesn't solve the problem, unfortunately:

https://jsfiddle.net/s8utLnbh/

[MwumLi]

@goliney Is there a follow-up?

[goliney]

@MwumLi unfortunately no