Use the better workaround found by @radstevee

Author: Aeltumn

interfaces/src/main/kotlin/com/noxcrew/interfaces/interfaces/InterfaceBuilder.kt

@@ -22,13 +22,11 @@ public abstract class InterfaceBuilder<P : Pane, I : Interface<I, P>> : Interfac
 
     /** Adds a new transform to the interface that updates whenever [triggers] change. */
     public fun withTransform(vararg triggers: Trigger, transform: Transform<P>) {
-        // Passing ::invoke is a workaround for a K2 issue where suspending + generic functional interfaces
-        // cannot be passed as a function argument properly without triggering a runtime exception.
-        _transforms += AppliedTransform(transformCounter, triggers.toSet(), transform::invoke)
+        _transforms += AppliedTransform(transformCounter, triggers.toSet(), transform)
     }
 
     /** Adds a new reactive transform to the interface. */
     public fun addTransform(reactiveTransform: ReactiveTransform<P>) {
-        _transforms += AppliedTransform(transformCounter, reactiveTransform.triggers.toSet(), reactiveTransform::invoke)
+        _transforms += AppliedTransform(transformCounter, reactiveTransform.triggers.toSet(), reactiveTransform)
     }
 }

interfaces/src/main/kotlin/com/noxcrew/interfaces/transform/Transform.kt

@@ -4,4 +4,7 @@ import com.noxcrew.interfaces.pane.Pane
 import com.noxcrew.interfaces.view.InterfaceView
 
 /** A transform which edits (transforms) a page in a view. */
-public fun interface Transform<P : Pane> : suspend (P, InterfaceView) -> Unit
+public fun interface Transform<P : Pane> {
+    // Defined differently to work around KT-74673: https://youtrack.jetbrains.com/issue/KT-74673/K2-ClassCastException-when-passing-suspending-functional-interface-with-generic
+    public suspend operator fun invoke(pane: P, view: InterfaceView)
+}