Bug 1752089 - Set security.webauthn.ctap2 true in nightly. r=dveditz

Differential Revision: https://phabricator.services.mozilla.com/D162167

modules/libpref/init/StaticPrefList.yaml

@@ -12929,7 +12929,7 @@
 # WebAuthn CTAP2 support
 - name: security.webauthn.ctap2
   type: bool
-  value: false
+  value: @IS_NIGHTLY_BUILD@
   mirror: always
 
 # Block Worker/SharedWorker scripts with wrong MIME type.