Crash in `closure #1 in SignalSubscription.init(observer:callback:)` at `/InstantSearchCore/Signal.swift:195` when project is compiled using Swift 6 compiler

[qizh]

Crash happens in both

• closure #1 in SignalSubscription.init<AlgoliaSearchClient.MultiSearchResponse>(observer:callback:)
• closure #1 in SignalSubscription.init<AlgoliaSearchClient.SearchResponse>(observer:callback:)
  at .../SourcePackages/checkouts/instantsearch-ios/Sources/InstantSearchCore/Signal.swift:195

Screenshots 🖥

Environment:

• OS: iOS 18.2
• InstantSearch SPM v7.26.3

Additional context
Doesn't happen when project is compiled using Swift 5 compiler

[qizh]

I've actually resolved this by adding .onQueue(.main) to my searcher's onResults and onError subscriptions.