set initial loading state from options fields

[aevstratov]

Recently i ran into an issue with displaying a table with resource data. I do basic flow in markup like: {#if someResource.loading}...{:else if someResource.error}...{:else}<!-- working with resource data -->{/if}. And when i try to display date like <td>{formatter.format(someResource.current!.user.created_at)}</td>, i get an error saying that i am trying to display data that is undefined. After some time of debugging i found line with loading definition that is just let loading = $state(false). So this is the reason i got that error. It first tries to render block that i assume has a valid data, then starts handling loaderFn. I think it would be nice to set initial loading state that depends on params (check whether params have initial data or not + check "lazy" field).

[changeset-bot]

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