feat(plugin-redirects): add Portuguese translation (#15269)

### What?
Adds Portuguese (pt) translations to the redirects plugin.

### Why?
To support Portuguese-speaking users who utilize the redirects plugin,
ensuring the Admin UI is fully localized for them.

### How?
Created `packages/plugin-redirects/src/translations/languages/pt.ts`
with the translated keys.
Registered the `pt` locale in
`packages/plugin-redirects/src/translations/index.ts`.

---------

Co-authored-by: Paul Popus <paul@payloadcms.com>

Author: josedudias

packages/plugin-redirects/src/translations/index.ts

@@ -4,13 +4,15 @@ import { en } from './languages/en.js'
 import { es } from './languages/es.js'
 import { fr } from './languages/fr.js'
 import { ja } from './languages/ja.js'
+import { pt } from './languages/pt.js'
 import { sv } from './languages/sv.js'
 
 export const translations = {
   en,
   es,
   fr,
   ja,
+  pt,
   sv
 }
 

packages/plugin-redirects/src/translations/languages/pt.ts

@@ -0,0 +1,13 @@
+import type { GenericTranslationsObject } from '@payloadcms/translations'
+
+export const pt: GenericTranslationsObject = {
+  $schema: '../translation-schema.json',
+  'plugin-redirects': {
+    customUrl: 'URL Personalizada',
+    documentToRedirect: 'Documento para Redirecionar',
+    fromUrl: 'URL de Origem',
+    internalLink: 'Link Interno',
+    redirectType: 'Tipo de Redirecionamento',
+    toUrlType: 'Tipo de Destino',
+  },
+}