Always use a binary diff view for custom editors

#87212

Author: mjbvz

src/vs/workbench/contrib/customEditor/browser/customEditors.ts

@@ -441,7 +441,7 @@ export class CustomEditorContribution implements IWorkbenchContribution {
 		if (modifiedOverride || originalOverride) {
 			return {
 				override: (async () => {
-					const input = new DiffEditorInput(editor.getName(), editor.getDescription(), originalOverride || editor.originalInput, modifiedOverride || editor.modifiedInput);
+					const input = new DiffEditorInput(editor.getName(), editor.getDescription(), originalOverride || editor.originalInput, modifiedOverride || editor.modifiedInput, true);
 					return this.editorService.openEditor(input, { ...options, ignoreOverrides: true }, group);
 				})(),
 			};