Merge pull request #3077 from francescoben/bug/3068_ios_ads_muted

fix: iOS Ads are reproduced with sound even if muted or volume set to 0

ios/Video/RCTVideo.swift

@@ -500,6 +500,11 @@ class RCTVideo: UIView, RCTVideoPlayerViewControllerDelegate, RCTPlayerObserverH
         applyModifiers()
     }
 
+    @objc
+    func isMuted() -> Bool {
+        return _muted
+    }
+
     @objc
     func setMuted(_ muted:Bool) {
         _muted = muted