Bug 1741719 - Make cc-name DE heuristic fix for Amazon sites more generic. r=dimi

Differential Revision: https://phabricator.services.mozilla.com/D131438

browser/extensions/formautofill/test/fixtures/heuristics_de_fields.html

@@ -62,11 +62,10 @@
       <input name="cccvc" id="CVV" maxlength="4" size="5" type="password">
     </div>
   </form>
-  <!-- We use 'test-input[x]' here so we can verify label text instead of tipping off the heuristic via id or name -->
   <form autocomplete="off">
     <div>
       <label for="test-input">Name auf der Karte</label>
-      <input id="test-input" maxlength="30" type="text">
+      <input id="test-input" maxlength="30" type="text" name="ppw-accountHolderName">
     </div>
     <div>
       <label for="DE_select">Kartenmarke</label>

toolkit/components/formautofill/content/heuristicsRegexp.js

@@ -49,8 +49,8 @@ var HeuristicsRegExp = {
       "additional-name": "apellido.?materno|lastlastname",
       "cc-name":
         // eslint-disable-next-line prettier/prettier
-        "titulaire" + // fr-FR
-        "|(name auf der karte)", // de-DE
+        "accountholdername" +
+        "|titulaire", // fr-FR
       "cc-number": "(cc|kk)nr", // de-DE
       "cc-exp-month": "(cc|kk)month", // de-DE
       "cc-exp-year": "(cc|kk)year", // de-DE