Defaulting videomaker header fonts to Inter (#5185)

videomaker/theme.json

@@ -120,10 +120,11 @@
 					"google": "family=Inter:wght@100..900"
 				},
 				{
-					"fontFamily": "-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif",
-					"fontSlug": "system-font",
+					"fontFamily": "\"Inter\", serif",
+					"fontSlug": "inter",
 					"slug": "heading-font",
-					"name": "Headings (System Font)"
+					"name": "Headings (Inter)",
+					"google": "family=Inter:wght@100..900"
 				}
 			],
 			"fontSizes": [