Revert "fix: remove waitUntilCompleted call as semaphore is used"

This reverts commit 05f6dd86b1.

VoidLink/Metal/MetalVideoRenderer.m

@@ -674,6 +674,7 @@ CFStringRef __currentColorSpace;
         [commandBuffer presentDrawable:drawable];
 
         [commandBuffer commit];
+        [commandBuffer waitUntilCompleted];
     }
 }