fix(person): Incorrect behavior of name.firstName() function (#1610)

src/locales/az/person/first_name.ts

@@ -0,0 +1,8 @@
+// We don't have a generic first name list for this locale
+// So simply concatenate male and female lists and remove any duplicates
+// This avoids falling back to fallback locale
+import { mergeArrays } from './../../../internal/merge';
+import female_first_name from './female_first_name';
+import male_first_name from './male_first_name';
+
+export default mergeArrays(female_first_name, male_first_name);

src/locales/az/person/index.ts

@@ -5,6 +5,7 @@
 import type { PersonDefinitions } from '../../..';
 import female_first_name from './female_first_name';
 import female_last_name from './female_last_name';
+import first_name from './first_name';
 import male_first_name from './male_first_name';
 import male_last_name from './male_last_name';
 import name_ from './name';
@@ -14,6 +15,7 @@ import suffix from './suffix';
 const person: PersonDefinitions = {
   female_first_name,
   female_last_name,
+  first_name,
   male_first_name,
   male_last_name,
   name: name_,