False positive unused import when using stores only in reactive statements

[KentoNishi]

The savingStatus store is only used in this one line that starts with $:, and the parser incorrectly marks it as an unused import. Removing the reactive statement and converting it into a function fixes it, but it's not very elegant. I'd love it if the parser could ignore the reactive $: statement when determining unused imports!

[KentoNishi]

@ota-meshi レスポンス早くてびっくりしました！わざわざお忙しい中ありがとうございます🙇‍♂️

[ota-meshi]

バグ報告ありがとうございます。そちらもでうまく動くといいのですが😅
また何かあればissueください🙏