fix(runes): preserve derived memoization during async batch reading (…

[SiddGud]

…#18503)

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• It's really useful if your PR references an issue where it is discussed ahead of time. In many cases, features are absent for a reason. For large changes, please create an RFC: https://github.com/sveltejs/rfcs
• Prefix your PR title with feat:, fix:, chore:, or docs:.
• This message body should clearly illustrate what problems it solves.
• Ideally, include a test that fails without this PR but passes with it.
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Tests and linting

• Run the tests with pnpm test and lint the project with pnpm lint

[pkg-svelte-dev]

Install the latest version of svelte from 965bb36:

pnpm add https://pkg.svelte.dev/svelte/c/965bb360808a7c3115ed6dddd8e0abedbcb03f33

Open in pkg.svelte.dev: https://pkg.svelte.dev/repos/svelte/pr/18504

Note

This PR is from a fork. A maintainer must approve approve each commit before it can be built and installed.

[changeset-bot]

🦋 Changeset detected

Latest commit: 965bb36

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
svelte	Patch

Not sure what this means? Click here to learn what changesets are.

[Click here if you're a maintainer who wants to add another changeset to this PR](https://github.com/SiddGud/svelte/new/fix-18503-async-derived-memo?filename=.changeset/little-bananas-attack.md&value=---%0A%22svelte%22%3A%20patch%0A---%0A%0Afix(runes)%3A%20preserve%20derived%20memoization%20during%20async%20batch%20reading%20(%E2%80%A6%0A)