feat: add lingui/no-unlocalized-strings ESLint rule and fix translations (#16610)

## Summary
This PR adds the `lingui/no-unlocalized-strings` ESLint rule to detect
untranslated strings and fixes translation issues across multiple
components.

## Changes

### ESLint Configuration (`eslint.config.react.mjs`)
- Added comprehensive `ignore` patterns for non-translatable strings
(CSS values, HTML attributes, technical identifiers)
- Added `ignoreNames` for props that don't need translation (className,
data-*, aria-*, etc.)
- Added `ignoreFunctions` for console methods, URL APIs, and other
non-user-facing functions
- Disabled rule for debug files, storybook, and test files

### Components Fixed (~19 files)
- Object record components (field inputs, pickers, merge dialogs)
- Settings components (accounts, admin panel)
- Serverless function components
- Record table and title cell components

## Status
🚧 **Work in Progress** - ~124 files remaining to fix

This PR is being submitted as draft to allow progressive fixing of
remaining translation issues.

## Testing
- Run `npx eslint "src/**/*.tsx"` in `packages/twenty-front` to check
remaining issues

packages/twenty-front/src/modules/settings/developers/components/ApiKeyNameInput.tsx

@@ -1,3 +1,4 @@
+import { t } from '@lingui/core/macro';
 import styled from '@emotion/styled';
 import { useCallback, useEffect } from 'react';
 import { useDebouncedCallback } from 'use-debounce';
@@ -66,7 +67,7 @@ export const ApiKeyNameInput = ({
     <StyledComboInputContainer>
       <SettingsTextInput
         instanceId={nameTextInputId}
-        placeholder="E.g. backoffice integration"
+        placeholder={t`E.g. backoffice integration`}
         onChange={onNameUpdate}
         fullWidth
         value={apiKeyName}

packages/twenty-front/src/modules/settings/developers/components/SettingsDevelopersWebhookForm.tsx

@@ -52,7 +52,7 @@ export const SettingsDevelopersWebhookForm = ({
 
   const getTitle = () => {
     if (isCreationMode) {
-      return 'New Webhook';
+      return t`New Webhook`;
     }
 
     const targetUrl = formConfig.watch('targetUrl');