firefox: allow temporary document font override

conf/foot/foot.ini

@@ -1,6 +1,6 @@
 # -*- conf -*-
 
-font=Comic Shanns Mono-Regular:size=10,Noto Sans Mono:size=10, Noto Color Emoji
+font=Atkinson Hyperlegible Mono:size=10,Comic Shanns Mono-Regular:size=10,Noto Sans Mono:size=10, Noto Color Emoji
 dpi-aware=yes
 
 [colors]

etc/firefox/policies/policies.json

@@ -672,8 +672,8 @@
 				"Value": false
 			},
 			"browser.display.use_document_fonts": {
-				"Comment": "Are webpages allowed to set their own fonts by default? 0 forbids them. See also browser.display.use_document_fonts.icon_font_allowlist for what webpages are allowed to set. If changing this, see also fingerprinting overrides",
+				"Comment": "Are webpages allowed to set their own fonts by default? 0 forbids them. See also browser.display.use_document_fonts.icon_font_allowlist for what webpages are allowed to set. If changing this, see also fingerprinting overrides. Status user for unhindered developer tools access.",
-				"Status": "locked",
+				"Status": "user",
 				"Type": "number",
 				"Value": 0
 			},