Fix delete font family/face when name is different from family

[matiasbenedetto]

What?

A fix for deleting font family and font faces.

Why?

When the font name is different from the font family the delete function is not working.
With this change, we look for both name and family.

How to test:

1. Activate a theme including fonts with different name that fontFamily as Disco theme.
2. Try to remove the font using the font manager screen and see that it is failing silently.

Example from disco:

 "fontFamilies": [
				{
					"fontFamily": "SpaceMono, serif",   <--------------------
					"name": "SpaceMono", <-----------------------------------
					"slug": "spacemono",
					"fontFace": [
						{
							"fontDisplay": "block",
							"fontFamily": "SpaceMono",
							"fontWeight": "400",
							"fontStyle": "normal",
							"fontStretch": "normal",
							"src": [
								"file:./assets/fonts/SpaceMono-Regular.ttf"
							]
						},
...

[jffng]

Can you provide an example to test this PR with?

[matiasbenedetto]

Can you provide an example to test this PR with?

Yes! Sorry for not including them earlier. I updated the PR description with test instructions.

[jffng]

Works as advertised!