fix(frontend): fix broken entry.server.tsx error handler

[gregory-j-baker]

A bad getLogger() line in entry.server.tsx was throwing, causing all errors to be misreported in the logging console.

Before:

2025-01-15T11:46:46.705Z   ERROR --- […rver/express/handlers.ts]: Unexpected error caught by express server Cannot read properties of undefined (reading 'getLogger') --- {
  stack: "TypeError: Cannot read properties of undefined (reading 'getLogger')\n" +
    '    at handleError (/home/gbaker/Projects/github/dts-stn/future-sir/frontend/app/entry.server.tsx:64:37)\n' +
...

After:

2025-01-15T11:47:04.449Z   ERROR --- [     app/entry.server.tsx]: Uncaught error while handling request: --- {
  name: 'AppError',
  errorCode: 'RTE-0001',
  correlationId: 'J4-GX3W29',
  httpStatusCode: 500,
  msg: 'No route found for /en/public/wizard/ (this should never happen)',
  ...