Bug 1954437 - Enable the Sanitizer API by default in Nightly. r=smaug,webidl

Differential Revision: https://phabricator.services.mozilla.com/D269056

Author: evilpie

dom/tests/mochitest/general/test_interfaces.js

@@ -1415,7 +1415,7 @@ let interfaceNamesInGlobalScope = [
   // IMPORTANT: Do not change this list without review from a DOM peer!
   { name: "SVGViewElement", insecureContext: true },
   // IMPORTANT: Do not change this list without review from a DOM peer!
-  { name: "Sanitizer", disabled: true },
+  { name: "Sanitizer", insecureContext: true, nightly: true },
   // IMPORTANT: Do not change this list without review from a DOM peer!
   { name: "Scheduler", insecureContext: true },
   // IMPORTANT: Do not change this list without review from a DOM peer!

modules/libpref/init/StaticPrefList.yaml

@@ -4572,7 +4572,7 @@
 # https://wicg.github.io/sanitizer-api/
 - name: dom.security.sanitizer.enabled
   type: bool
-  value: false
+  value: @IS_NIGHTLY_BUILD@
   mirror: always
 
 # Logs elements and attributes removed by the Sanitizer API to the console.