error when <input bind:group> within {#if} block

[SourceR85]

Describe the bug

New bug in Svelte 3.56.0

If the conditional input is neither the first nor the last in bind:group, you get the error "input is not defined"

Reproduction

REPL with the bug: https://svelte.dev/repl/ebbd30668eca4814a2c5a336b6c6f9d5?version=3.56.0
Working REPL, using svelte 3.55.1: https://svelte.dev/repl/ebbd30668eca4814a2c5a336b6c6f9d5?version=3.55.1

Logs

Exception thrown in Browser:

ReferenceError: input is not defined

System Info

System:
  OS: Linux 6.1 Fedora Linux 37 (KDE Plasma)
  CPU: (16) x64 AMD Ryzen 7 6800HS Creator Edition
  Memory: 2.39 GB / 13.34 GB
  Container: Yes
  Shell: 5.9 - /usr/bin/zsh
Binaries:
  Node: 18.15.0 - /run/user/1004/fnm_multishells/41129_1678470345258/bin/node
  npm: 9.5.0 - /run/user/1004/fnm_multishells/41129_1678470345258/bin/npm
Browsers:
  Firefox: 110.0
npmPackages:
  svelte: 3.56.0 => 3.56.0

Primarily I'm working with Brave v1.49.120, but it's a flatpak installation.

Severity

blocking an upgrade

[Conduitry]

This should be working in 3.57.0 - https://svelte.dev/repl/ebbd30668eca4814a2c5a336b6c6f9d5?version=3.57.0