Dashboard: fix typecheck error in AddCustomAppModal#236
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`template` is `useState<unknown>`, so `{template && …}` types the
short-circuit value as unknown, which is not assignable to ReactNode.
Compare against null instead so the expression narrows to boolean.
Broke on main in e8bc360 and fails every CI run since (e.g. the oblien#235
merge run).
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CI's Typecheck job fails on
main(and therefore on every PR, including #222):templateisuseState<unknown>, so{template && …}can evaluate to theunknownvalue itself when it's falsy, and JSX rejectsunknownas a child. Comparing againstnullnarrows the guard to a boolean.Introduced on
mainin e8bc360; the #235 merge run shows the same failure, so this is not specific to any open PR.One-line change, no behavior difference (
templateis only evernullor a parsed object).