refactor(apple): share AsyncTimeout helper

apps/ios/Sources/Location/LocationService.swift

@@ -90,20 +90,7 @@ final class LocationService: NSObject, CLLocationManagerDelegate {
         timeoutMs: Int,
         operation: @escaping @Sendable () async throws -> T) async throws -> T
     {
-        if timeoutMs == 0 {
-            return try await operation()
-        }
-
-        return try await withThrowingTaskGroup(of: T.self) { group in
-            group.addTask { try await operation() }
-            group.addTask {
-                try await Task.sleep(nanoseconds: UInt64(timeoutMs) * 1_000_000)
-                throw Error.timeout
-            }
-            let result = try await group.next()!
-            group.cancelAll()
-            return result
-        }
+        try await AsyncTimeout.withTimeoutMs(timeoutMs: timeoutMs, onTimeout: { Error.timeout }, operation: operation)
     }
 
     private static func accuracyValue(_ accuracy: ClawdbotLocationAccuracy) -> CLLocationAccuracy {