feat: Preload GutenbergKit dependencies

Modules/Package.swift

@@ -55,7 +55,7 @@ let package = Package(
         .package(url: "https://github.com/wordpress-mobile/wpxmlrpc", from: "0.9.0"),
         .package(url: "https://github.com/wordpress-mobile/NSURL-IDN", revision: "b34794c9a3f32312e1593d4a3d120572afa0d010"),
         .package(url: "https://github.com/zendesk/support_sdk_ios", from: "8.0.3"),
-        .package(url: "https://github.com/wordpress-mobile/GutenbergKit", from: "0.10.1"),
+        .package(url: "https://github.com/wordpress-mobile/GutenbergKit", from: "0.12.1"),
         // We can't use wordpress-rs branches nor commits here. Only tags work.
         .package(url: "https://github.com/Automattic/wordpress-rs", revision: "alpha-20251101"),
         .package(

Modules/Sources/WordPressCore/Types/LockingHashMap.swift

@@ -0,0 +1,64 @@
+import Foundation
+
+public class LockingHashMap<Value>: @unchecked Sendable {
+    let lock = NSLock()
+
+    var list: [AnyHashable: Value] = [:]
+
+    public init(_ values: [AnyHashable: Value] = [:]) {
+        self.list = values
+    }
+
+    public subscript(_ key: AnyHashable) -> Value? {
+        get {
+            lock.withLock {
+                list[key]
+            }
+        }
+        set {
+            lock.withLock {
+                list[key] = newValue
+            }
+        }
+    }
+
+    public var values: Dictionary<AnyHashable, Value>.Values {
+        lock.withLock {
+            self.list.values
+        }
+    }
+
+    @discardableResult
+    public func removeValue(forKey key: AnyHashable) -> Value? {
+        lock.withLock {
+            self.list.removeValue(forKey: key)
+        }
+    }
+
+    public func removeAll() {
+        lock.withLock {
+            self.list.removeAll()
+        }
+    }
+}
+
+public class LockingTaskHashMap<T, E>: LockingHashMap<Task<T, E>>, @unchecked Sendable where T: Sendable, E: Error {
+
+    @discardableResult
+    public override func removeValue(forKey key: AnyHashable) -> Task<T, E>? {
+        lock.withLock {
+            let task = self.list.removeValue(forKey: key)
+            task?.cancel()
+            return task
+        }
+    }
+
+    public override func removeAll() {
+        lock.withLock {
+            for key in self.list.keys {
+                let task = self.list.removeValue(forKey: key)
+                task?.cancel()
+            }
+        }
+    }
+}