Disable AutoSaveRAM while a movie is loaded

Author: YoshiRulz

src/BizHawk.Client.EmuHawk/MainForm.cs

@@ -769,6 +769,8 @@ _argParser.SocketAddress is var (socketIP, socketPort)
 					}
 				}
 			}
+			//TODO should we be calling `OnRomChanged` from this ctor? it handles this and a bunch of other things also done here
+			_trackingAutoSaveRAM = Config.AutosaveSaveRAM && MovieSession.Movie is null;
 
 			if (_argParser.startFullscreen || Config.StartFullscreen)
 			{
@@ -1760,6 +1762,8 @@ public bool RunLibretroCoreChooser()
 		public int AutoFlushSaveRamIn { get; set; }
 		private bool AutoFlushSaveRamFailed;
 
+		private bool _trackingAutoSaveRAM;
+
 		private void SetStatusBar()
 		{
 			if (!_inFullscreen)
@@ -3011,7 +3015,7 @@ private void StepRunLoop_Core(bool force = false)
 
 				RA?.OnFrameAdvance();
 
-				if (Config.AutosaveSaveRAM)
+				if (_trackingAutoSaveRAM)
 				{
 					AutoFlushSaveRamIn--;
 					if (AutoFlushSaveRamIn <= 0)
@@ -3897,6 +3901,7 @@ private void OnRomChanged()
 			UpdateCoreStatusBarButton();
 			UpdateDumpInfo();
 			SetMainformMovieInfo();
+			_trackingAutoSaveRAM = Config.AutosaveSaveRAM && MovieSession.Movie is null;
 			RA?.Restart();
 		}