Svelte 5: Whitespace before the closing brace of `{#snippet}` will throw a parse error.

[ota-meshi]

Describe the bug

The following template throws a parse error, but previously worked:

{#snippet test(x) }
{/snippet}

It seems that even after #12144 has been applied, this issue has still not been fixed.

Reproduction

https://svelte-5-preview.vercel.app/#H4sIAAAAAAAAEy3IQQqAIBAF0KvIb1MgtHfXOapF5AiC2dBMUYh3j6DlewUhJhK4sSAvG8FhYIaFPvxBLkpKsJD9PNZvSiM5MpMaJdH27kydcun_rFOGxbb7GCJ5OD1OqnN9AX58jWdnAAAA

Logs

Error compiling App.svelte:
Expected token }

System Info

System:
    OS: macOS 14.4.1
    CPU: (8) arm64 Apple M3
    Memory: 31.33 MB / 8.00 GB
    Shell: 5.9 - /bin/zsh
  Binaries:
    Node: 20.15.0 - /usr/local/bin/node
    Yarn: 1.22.22 - /usr/local/bin/yarn
    npm: 10.7.0 - /usr/local/bin/npm
    pnpm: 9.4.0 - /usr/local/bin/pnpm
  Browsers:
    Chrome: 126.0.6478.63
    Chrome Canary: 121.0.6124.0
    Safari: 17.4.1
  npmPackages:
    svelte: ^5.0.0-next.164 => 5.0.0-next.164

Severity

blocking an upgrade