IIFE in nested element does not work

[devunt]

Describe the bug

Calling IIFE inside of nested element does not work, as opposed to top level element.

<span class={(() => 'red')()}>span (red)</span>
^ get class="red" rendered

<div>
  <span class={(() => 'red')()}>div > span (red)</span>
  ^ span does not have class attribute
</div>

This worked in 5.1.17, but regressed in 5.2.0.

Reproduction

https://svelte.dev/playground/8d35c2574e7a4a3bbd15a7578623535c?version=5.2.0
https://svelte.dev/playground/8d35c2574e7a4a3bbd15a7578623535c?version=5.1.17

Logs

No response

System Info

Svelte Playground 5.2.0 (or 5.1.17)

Severity

blocking an upgrade