fix(macos): guard MoltenVK heaps

shared/apple/MpvPlayer/MpvPlayerCoreBase.swift

@@ -7,6 +7,7 @@ import QuartzCore
   import UIKit
 #elseif os(macOS)
   import Cocoa
+  import Metal
 #endif
 
 protocol MpvPlayerDelegate: AnyObject {
@@ -278,6 +279,7 @@ class MpvPlayerCoreBase: NSObject {
   func setupMpv() -> Bool {
     #if os(macOS)
       guard let renderLayer = metalLayer else { return false }
+      configureMoltenVKPlacementHeaps()
     #else
       guard let renderLayer = videoLayer else { return false }
     #endif
@@ -597,6 +599,16 @@ class MpvPlayerCoreBase: NSObject {
     checkError(mpv_set_option_string(mpv, "target-colorspace-hint", "yes"))
   }
 
+  #if os(macOS)
+    private func configureMoltenVKPlacementHeaps() {
+      guard let device = MTLCreateSystemDefaultDevice() else { return }
+      let supportsPlacementHeaps = device.supportsFamily(.apple2) || device.supportsFamily(.mac2)
+      if !supportsPlacementHeaps {
+        setenv("MVK_CONFIG_USE_MTLHEAP", "0", 1)
+      }
+    }
+  #endif
+
   private func isManagedRendererProperty(_ name: String) -> Bool {
     name == "vo" || name == "wid" || name == "gpu-api" || name == "gpu-context"
       || name == "avfoundation-composite-osd"