Suppress prefer-const warnings for $props() and $derived()

[Conduitry]

I'm not sure what mechanism is being used to suppress prefer-const warnings for variables that have bind:s in the template, but these warnings should also be suppressed for $props() and $derived(). Using a const for a $derived() feels like a weird thing to force on people, and a mixture of bindable and non-bindable $props() can cause more serious issues where ESLint will encourage components that can't be compiled - sveltejs/svelte#13897

[ryanatkn]

A workaround for props is using the destructuring: all option in prefer-const for Svelte files.

[ilyakamens]

I'm also encountering this with $derived() and $derived.by().

[baseballyama]

Fixed by #933

[ilyakamens]

Thank you!