make autopause at tend of movie work in tastudio

- closes #2622

not sure if this should always apply or only in playback mode but probably doesn't matter too much.

Also changed the default to false because that's what it's effectively been for many years

src/BizHawk.Client.EmuHawk/tools/TAStudio/TAStudio.IToolForm.cs

@@ -20,6 +20,7 @@ namespace BizHawk.Client.EmuHawk
 		private bool _initializing; // If true, will bypass restart logic, this is necessary since loading projects causes a movie to load which causes a rom to reload causing dialogs to restart
 
 		private int _lastRefresh;
+		private bool _doPause;
 
 		private void UpdateProgressBar()
 		{
@@ -93,6 +94,12 @@ namespace BizHawk.Client.EmuHawk
 				refreshNeeded = true;
 			}
 
+			if (Settings.AutoPause)
+			{
+				if (_doPause && CurrentTasMovie.IsAtEnd()) MainForm.PauseEmulator();
+				_doPause = !CurrentTasMovie.IsAtEnd();
+			}
+
 			RefreshDialog(refreshNeeded, refreshBranches: false);
 			UpdateProgressBar();
 		}

src/BizHawk.Client.EmuHawk/tools/TAStudio/TAStudio.cs

@@ -65,7 +65,7 @@ namespace BizHawk.Client.EmuHawk
 			public TAStudioSettings()
 			{
 				RecentTas = new RecentFiles(8);
-				AutoPause = true;
+				AutoPause = false;
 				FollowCursor = true;
 				ScrollSpeed = 6;
 				FollowCursorAlwaysScroll = false;