Release v10.43.0 · realm/realm-swift

Added Results.subscribe API for flexible sync. Now you can subscribe and unsubscribe to a flexible sync subscription through an object Result.
```
// Named subscription query
let results = try await realm.objects(Dog.self).where { $0.age > 18 }.subscribe(name: "adults")
results.unsubscribe()

// Unnamed subscription query
let results = try await realm.objects(Dog.self).subscribe()
results.unsubscribe()
```
After committing the subscription to the realm's local subscription set, the method will wait for downloads according to the WaitForSyncMode.
```
let results = try await realm.objects(Dog.self).where { $0.age > 1 }.subscribe(waitForSync: .always)
```
Where .always will always download the latest data for the subscription, .onCreation will do it only the first time the subscription is created, and .never will never wait for the data to be downloaded.

This API is currently in preview and may be subject to changes in the future.
Added a new API which allows to remove all the unnamed subscriptions from the subscription set.
```
realm.subscriptions.removeAll(unnamedOnly: true)
```

Build the prebuilt libraries with the classic linker to work around the new linker being broken on iOS <15. When using CocoaPods or SPM, you will need to manually add -Wl,-classic_ld to OTHER_LDFLAGS for your application until Apple fixes the bug.
Remove the visionOS slice from the Carthage build as it makes Carthage reject the xcframework (#8370).
Permission errors when creating asymmetric objects were not handled correctly, leading to a crash (Core #6978, since 10.35.0)

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