Fixes CI

Author: hediet

src/vs/editor/browser/widget/diffEditorWidget.ts

@@ -1031,7 +1031,7 @@ export class DiffEditorWidget extends Disposable implements editorBrowser.IDiffE
 		const modifiedViewState = this._modifiedEditor.saveViewState();
 		return {
 			original: originalViewState,
-			modified: modifiedViewState
+			modified: modifiedViewState,
 		};
 	}
 

src/vs/editor/browser/widget/diffEditorWidget2/diffEditorWidget2.ts

@@ -293,7 +293,9 @@ export class DiffEditorWidget2 extends DelegatingEditor implements IDiffEditor {
 			const diffEditorState = s as IDiffEditorViewState;
 			this._editors.original.restoreViewState(diffEditorState.original);
 			this._editors.modified.restoreViewState(diffEditorState.modified);
-			this._diffModel.get()?.restoreSerializedState(diffEditorState.modelState as any);
+			if (diffEditorState.modelState) {
+				this._diffModel.get()?.restoreSerializedState(diffEditorState.modelState as any);
+			}
 		}
 	}
 

src/vs/editor/common/editorCommon.ts

@@ -195,7 +195,7 @@ export interface ICodeEditorViewState {
 export interface IDiffEditorViewState {
 	original: ICodeEditorViewState | null;
 	modified: ICodeEditorViewState | null;
-	modelState: unknown;
+	modelState?: unknown;
 }
 /**
  * An editor view state.

src/vs/monaco.d.ts

@@ -2707,7 +2707,7 @@ declare namespace monaco.editor {
 	export interface IDiffEditorViewState {
 		original: ICodeEditorViewState | null;
 		modified: ICodeEditorViewState | null;
-		modelState: unknown;
+		modelState?: unknown;
 	}
 
 	/**