Move state fieldnames to Identity constants

src/services/autofill.service.ts

@@ -651,8 +651,7 @@ export default class AutofillService implements AutofillServiceInterface {
                     fillFields.city = f;
                     break;
                 } else if (!fillFields.state && this.isFieldMatch(f[attr],
-                    ['state', 'province', 'provence', 'address-level-1', 'address-state',
-                        'address-province'])) {
+                    IdentityAutoFillConstants.StateFieldNames)) {
                     fillFields.state = f;
                     break;
                 } else if (!fillFields.country && this.isFieldMatch(f[attr],

src/services/autofillConstants.ts

@@ -270,6 +270,15 @@ export class IdentityAutoFillConstants {
     "address-town",
   ];
 
+  static readonly StateFieldNames: string[] = [
+    "state",
+    "province",
+    "provence",
+    "address-level-1",
+    "address-state",
+    "address-province",
+  ];
+
   static readonly IsoCountries: { [id: string]: string } = {
     afghanistan: "AF",
     "aland islands": "AX",