Fix some sendability errors for Xcodde 16.1 (pointfreeco#203)

Author: mbrandonw

Sources/SwiftUINavigation/Binding.swift

@@ -62,7 +62,7 @@
     ///   element is a duplicate of the first.
     public func removeDuplicates(
       by isDuplicate: @Sendable @escaping (Value, Value) -> Bool
-    ) -> Self {
+    ) -> Self where Value: Sendable {
       .init(
         get: { self.wrappedValue },
         set: { newValue, transaction in
@@ -73,7 +73,7 @@
     }
   }
 
-  extension Binding where Value: Equatable {
+  extension Binding where Value: Equatable, Value: Sendable {
     /// Creates a binding that ignores writes to its wrapped value when equivalent to the new value.
     ///
     /// Useful to minimize writes to bindings passed to SwiftUI APIs. For example, [`NavigationLink`
@@ -86,7 +86,7 @@
     }
   }
 
-  extension Binding {
+  extension Binding where Value: Sendable {
     public func _printChanges(_ prefix: String = "") -> Self {
       Self(
         get: { self.wrappedValue },

Sources/SwiftUINavigation/Internal/Binding+Internal.swift

@@ -1,7 +1,7 @@
 #if canImport(SwiftUI)
   import SwiftUI
 
-  extension Binding {
+  extension Binding where Value: Sendable {
     func didSet(_ perform: @escaping @Sendable (Value) -> Void) -> Self {
       .init(
         get: { self.wrappedValue },

Sources/SwiftUINavigation/NavigationLink.swift

@@ -54,7 +54,7 @@
     @available(macOS, introduced: 10.15, deprecated: 13)
     @available(tvOS, introduced: 13, deprecated: 16)
     @available(watchOS, introduced: 6, deprecated: 9)
-    public init<Item, WrappedDestination>(
+    public init<Item: Sendable, WrappedDestination>(
       item: Binding<Item?>,
       onNavigate: @escaping @Sendable (_ isActive: Bool) -> Void,
       @ViewBuilder destination: @escaping (Binding<Item>) -> WrappedDestination,