Svelte 5.1.5: bind:this breaks with #snippet

[Razunter]

Describe the bug

bind:this={variable} breaks when element contains #snippet inside. The bug was introduced in v5.1.5.

<form bind:this={thisBug}>
{#snippet Bug()}
{/snippet}
</form>

Reproduction

https://stackblitz.com/edit/vitejs-vite-ot6c27?file=src%2FApp.svelte

Logs

No response

System Info

System:
    OS: Linux 5.15 Ubuntu 22.04.5 LTS 22.04.5 LTS (Jammy Jellyfish)
    CPU: (20) x64 12th Gen Intel(R) Core(TM) i7-12700KF
    Memory: 10.53 GB / 15.55 GB
    Container: Yes
    Shell: 5.8.1 - /usr/bin/zsh
  Binaries:
    Node: 23.0.0 - ~/.volta/tools/image/node/23.0.0/bin/node
    npm: 10.9.0 - ~/.volta/tools/image/node/23.0.0/bin/npm
    pnpm: 9.12.2 - ~/.volta/bin/pnpm
    bun: 1.1.33 - ~/.bun/bin/bun
  npmPackages:
    rollup: ^4.24.3 => 4.24.3
    svelte: ^5.1.6 => 5.1.6

Severity

blocking an upgrade

[paoloricciuti]

Here's a simpler reproduction

repl

The bind_this code is for some reason not generated. Will fix this evening

[trueadm]

Ah this was caused by #14038, I think I know where too