dsda: disable wipe for imported demos

internally, wipe is rendered within a single "frame" so no input is processed. but we can't know from the movie which frame is wipe, so we can't insert empty frames to make imported movies work with our wipe - which has to happen across frames so we could capture every interim state of it. when exporting movies, wipe frames can be dropped based on lag info which we're currently setting for wipe only.

src/BizHawk.Client.Common/movie/import/DoomLmpImport.cs

@@ -47,6 +47,7 @@ namespace BizHawk.Client.Common
 				FastMonsters = input[i++] is not 0,
 				NoMonsters = input[i++] is not 0,
 				TurningResolution = DSDA.TurningResolution.Shorttics,
+				RenderWipescreen = false,
 			};
 			_ = input[i++]; // DisplayPlayer is a non-sync setting so importers can't* set it
 			syncSettings.Player1Present = input[i++] is not 0;

src/BizHawk.Client.Common/movie/import/HereticLmpImport.cs

@@ -32,6 +32,7 @@ namespace BizHawk.Client.Common
 				Player3Present = input[i++] is not 0,
 				Player4Present = input[i++] is not 0,
 				TurningResolution = DSDA.TurningResolution.Shorttics,
+				RenderWipescreen = false,
 			};
 			Result.Movie.SyncSettingsJson = ConfigService.SaveWithType(syncSettings);
 

src/BizHawk.Client.Common/movie/import/HexenLmpImport.cs

@@ -36,6 +36,7 @@ namespace BizHawk.Client.Common
 				Player4Present = input[i++] is not 0,
 				Player4Class = (DSDA.HexenClass) input[i++],
 				TurningResolution = DSDA.TurningResolution.Shorttics,
+				RenderWipescreen = false,
 			};
 			_ = input[i++]; // player 5 isPresent
 			_ = input[i++]; // player 5 class