I get the "The engine "pnpm" appears to be invalid" warning when installing svelte-preprocess@5.1.3 with yarn

[fromaline]

Describe the bug
I'm getting this weird non-critical bug, when installing svelte-preprocess@5.1.3 with yarn:

warning svelte-preprocess@5.1.3: The engine "pnpm" appears to be invalid.

To Reproduce

yarn add svelte-preprocess

Expected behavior
I expected no warning at all

Information about your project:

• Your operating system: MacOS 14.2.1

• svelte-preprocess version 5.1.3

[dummdidumm]

Fixed through #629