Bug 1825739 - Replace generic ESLint disable statements with specific and prettier ones for formautofill. r=credential-management-reviewers,dimi

Depends on D174227

Differential Revision: https://phabricator.services.mozilla.com/D174228

.prettierignore

@@ -56,3 +56,7 @@ devtools/shared/plural-form.js
 
 # Ignore backgroundtasks preferences files.
 toolkit/components/backgroundtasks/defaults
+
+# A mainly-imported file, that we don't want to format, but want to keep an eye
+# on with the other imported files.
+toolkit/components/formautofill/CreditCardRuleset.jsm

toolkit/components/formautofill/content/heuristicsRegexp.js

@@ -1,4 +1,3 @@
-/* eslint-disable prettier/prettier */
 /* eslint-disable no-useless-concat */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
@@ -12,6 +11,7 @@
 
 "use strict";
 
+// prettier-ignore
 var HeuristicsRegExp = {
   RULES: {
     email: undefined,