When testing whether `value` is an object, use the ideal sequence of strictly not equal to `null` followed by `typeof value === 'object'` consistently. Specifically there's no point in using double equal with `null` since `undefined` is ruled out by the `typeof` check. Also avoid the unnecessary ToBoolean check on `value.ngOnDestroy` in `hasOnDestroy()`, since the `typeof value.ngOnDestroy === 'function'` will only let closures pass and all closures are truish (with the notable exception of `document.all`, but that shouldn't be relevant for the `ngOnDestroy` hook). PR Close #28400
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