Deprecate public broadcast picker extension (#586)

Public show method defined as an extension to
`RPSystemBroadcastPickerView` has been deprecated in favor of
`BroadcastManager.shared.requestActivation()`.

---------

Co-authored-by: Hiroshi Horie <[email protected]>

Author: ladvoc

.nanpa/make-extension-private.kdl

@@ -0,0 +1 @@
+patch type="deprecated" "Deprecated public method to show broadcast picker"

Sources/LiveKit/Broadcast/BroadcastManager.swift

@@ -70,9 +70,8 @@ public final class BroadcastManager: Sendable {
     ///
     public func requestActivation() {
         Task {
-            await RPSystemBroadcastPickerView.show(
-                for: BroadcastBundleInfo.screenSharingExtension,
-                showsMicrophoneButton: false
+            await RPSystemBroadcastPickerView.showPicker(
+                for: BroadcastBundleInfo.screenSharingExtension
             )
         }
     }
@@ -116,4 +115,17 @@ public protocol BroadcastManagerDelegate {
     func broadcastManager(didChangeState isBroadcasting: Bool)
 }
 
+private extension RPSystemBroadcastPickerView {
+    /// Convenience function to show broadcast picker.
+    static func showPicker(for preferredExtension: String?) {
+        let view = RPSystemBroadcastPickerView()
+        view.preferredExtension = preferredExtension
+        view.showsMicrophoneButton = false
+
+        let selector = NSSelectorFromString("buttonPressed:")
+        guard view.responds(to: selector) else { return }
+        view.perform(selector, with: nil)
+    }
+}
+
 #endif

Sources/LiveKit/Track/Support/Extensions.swift

@@ -100,6 +100,7 @@ public extension CGImage {
 @available(iOS 12, *)
 public extension RPSystemBroadcastPickerView {
     /// Convenience function to show broadcast extension picker
+    @available(*, deprecated, message: "Use BroadcastManager.shared.requestActivation() instead")
     static func show(for preferredExtension: String? = nil,
                      showsMicrophoneButton: Bool = true)
     {