feat(server): add Brazilian Portuguese translation support (#13725)

* Added 'Brazilian Portuguese' to the list of supported translation
languages in both backend and frontend.

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

* **New Features**
* Added Brazilian Portuguese as a supported translation language across
the app.
* Brazilian Portuguese now appears in language selection for translation
actions.
* AI translation prompts now include Brazilian Portuguese as a valid
target option.
  * No other translation behaviors or controls were modified.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Co-authored-by: DarkSky <25152247+darkskygit@users.noreply.github.com>

packages/backend/server/src/plugins/copilot/prompt/prompts.ts

@@ -689,6 +689,7 @@ You are a highly accomplished professional translator, demonstrating profound pr
         params: {
           language: [
             'English',
+            'Brazilian Portuguese',
             'Spanish',
             'German',
             'French',
@@ -708,6 +709,7 @@ You are a highly accomplished professional translator, demonstrating profound pr
         params: {
           language: [
             'English',
+            'Brazilian Portuguese',
             'Spanish',
             'German',
             'French',

packages/frontend/core/src/blocksuite/ai/actions/types.ts

@@ -25,6 +25,7 @@ import type { PromptKey } from '../provider/prompt';
 
 export const translateLangs = [
   'English',
+  'Brazilian Portuguese',
   'Spanish',
   'German',
   'French',