Fix warnings for watchOS

Demo/Demo/Kingfisher-watchOS-Demo Extension/InterfaceController.swift

@@ -48,9 +48,9 @@ class InterfaceController: WKInterfaceController {
     func refreshImage() {
         let url = URL(string: "https://raw.githubusercontent.com/onevcat/Kingfisher/master/images/kingfisher-\(currentIndex! + 1).jpg")!
         print("Start loading... \(url)")
-        interfaceImage.kf.setImage(with: url) { r in
+        interfaceImage.kf.setImage(with: url, completionHandler:  { r in
             print(r)
-        }
+        })
     }
 
     override func willActivate() {

Sources/Extensions/WKInterfaceImage+Kingfisher.swift

@@ -56,7 +56,7 @@ extension KingfisherWrapper where Base: WKInterfaceImage {
         placeholder: KFCrossPlatformImage? = nil,
         options: KingfisherOptionsInfo? = nil,
         progressBlock: DownloadProgressBlock? = nil,
-        completionHandler: ((Result<RetrieveImageResult, KingfisherError>) -> Void)? = nil) -> DownloadTask?
+        completionHandler: (@Sendable (Result<RetrieveImageResult, KingfisherError>) -> Void)? = nil) -> DownloadTask?
     {
         let options = KingfisherParsedOptionsInfo(KingfisherManager.shared.defaultOptions + (options ?? .empty))
         return setImage(
@@ -91,7 +91,7 @@ extension KingfisherWrapper where Base: WKInterfaceImage {
         placeholder: KFCrossPlatformImage? = nil,
         options: KingfisherOptionsInfo? = nil,
         progressBlock: DownloadProgressBlock? = nil,
-        completionHandler: ((Result<RetrieveImageResult, KingfisherError>) -> Void)? = nil) -> DownloadTask?
+        completionHandler: (@Sendable (Result<RetrieveImageResult, KingfisherError>) -> Void)? = nil) -> DownloadTask?
     {
         return setImage(
             with: resource?.convertToSource(),
@@ -106,7 +106,7 @@ extension KingfisherWrapper where Base: WKInterfaceImage {
         placeholder: KFCrossPlatformImage? = nil,
         parsedOptions: KingfisherParsedOptionsInfo,
         progressBlock: DownloadProgressBlock? = nil,
-        completionHandler: ((Result<RetrieveImageResult, KingfisherError>) -> Void)? = nil) -> DownloadTask?
+        completionHandler: (@Sendable (Result<RetrieveImageResult, KingfisherError>) -> Void)? = nil) -> DownloadTask?
     {
         var mutatingSelf = self
         guard let source = source else {
@@ -131,11 +131,13 @@ extension KingfisherWrapper where Base: WKInterfaceImage {
         let task = KingfisherManager.shared.retrieveImage(
             with: source,
             options: options,
-            downloadTaskUpdated: { mutatingSelf.imageTask = $0 },
+            downloadTaskUpdated: { task in
+                Task { @MainActor in mutatingSelf.imageTask = task }
+            },
             progressiveImageSetter: { self.base.setImage($0) },
             referenceTaskIdentifierChecker: { issuedIdentifier == self.taskIdentifier },
             completionHandler: { result in
-                CallbackQueue.mainCurrentOrAsync.execute {
+                CallbackQueueMain.currentOrAsync {
                     guard issuedIdentifier == self.taskIdentifier else {
                         let reason: KingfisherError.ImageSettingErrorReason
                         do {