feat: fr translation and "server" message translation

[JayPe69]

• French translation support
• Translations of all hard coded messages in login ui

[JayPe69]

When using fr , I have the following error coming from the server.
Howerver, all the translation from the frontend point of view are working correctly

Error fetching custom translations: Error [ConnectError]: [not_found] Errors.Query.HostedLoginTranslationNotFound-fr (QUERY-6gb5QR)
    at async eval (src/i18n/request.ts:37:21)
  35 |   let translations: JsonObject | {} = {};
  36 |   try {
> 37 |     const i18nJSON = await getHostedLoginTranslation({
     |                     ^
  38 |       serviceUrl,
  39 |       locale,
  40 |       organization: i18nOrganization, {
  rawMessage: 'Errors.Query.HostedLoginTranslationNotFound-fr (QUERY-6gb5QR)',
  code: 5,
  metadata: Headers {
    'grpc-message': 'Errors.Query.HostedLoginTranslationNotFound-fr (QUERY-6gb5QR)',
    'grpc-status': '5',
    'grpc-status-details-bin': 'CAUSPUVycm9ycy5RdWVyeS5Ib3N0ZWRMb2dpblRyYW5zbGF0aW9uTm90Rm91bmQtZnIgKFFVRVJZLTZnYjVRUikabAoqdHlwZS5nb29nbGVhcGlzLmNvbS96aXRhZGVsLnYxLkVycm9yRGV0YWlsEj4KDFFVRVJZLTZnYjVRUhIuRXJyb3JzLlF1ZXJ5Lkhvc3RlZExvZ2luVHJhbnNsYXRpb25Ob3RGb3VuZC1mcg',
    'content-type': 'application/grpc+proto',
    date: 'Mon, 13 Oct 2025 14:22:39 GMT',
    'grpc-accept-encoding': 'gzip',
    'grpc-encoding': 'gzip',
    vary: 'Origin',
    'x-frame-options': 'DENY',
    'x-robots-tag': 'none'
  },
  details: [Array],
  cause: undefined
}

French is correctly set up :

[JayPe69]

@peintnermax , could you check this ? and see if we have to push it directly to the main repo ?