fix: add ignoreLocalVariables to prefer-svelte-reactivity rule to avoid false positives

[baseballyama]

close: #1271

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🦋 Changeset detected

Latest commit: 3b5b904

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

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Name	Type
eslint-plugin-svelte	Patch

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[marekdedic]

Thanks for taking this on. I think we should be careful, though - this should still report even when ignoring local variables:

function fn(): Set<string> {
  const local = new Set();
  local.add("Hello");
  return local;
}

Arguably, even this should report (and probably doesn't even currently...):

function fn(): Set<string> {
  const local = new Set();
  return local;
}

(similarly for class members...)