Revert "Restore notebook layout performance optimization (microsoft#172466)" (microsoft#175180)

This reverts commit 317f309.

Fixes microsoft#175179

The root cause is that the grid view is still passing us bad positions. Will open new bug for this

Author: mjbvz

src/vs/workbench/contrib/notebook/browser/notebookEditorWidget.ts

@@ -1709,7 +1709,7 @@ export class NotebookEditorWidget extends Disposable implements INotebookEditorD
 		return this._scrollBeyondLastLine && !this.isEmbedded;
 	}
 
-	layout(dimension: DOM.Dimension, shadowElement?: HTMLElement, position?: DOM.IDomPosition): void {
+	layout(dimension: DOM.Dimension, shadowElement?: HTMLElement, _position?: DOM.IDomPosition): void {
 		if (!shadowElement && this._shadowElementViewInfo === null) {
 			this._dimension = dimension;
 			return;
@@ -1721,7 +1721,7 @@ export class NotebookEditorWidget extends Disposable implements INotebookEditorD
 		}
 
 		if (shadowElement) {
-			this.updateShadowElement(shadowElement, dimension, position);
+			this.updateShadowElement(shadowElement, dimension, /*position*/ undefined);
 		}
 
 		if (this._shadowElementViewInfo && this._shadowElementViewInfo.width <= 0 && this._shadowElementViewInfo.height <= 0) {
@@ -1750,7 +1750,7 @@ export class NotebookEditorWidget extends Disposable implements INotebookEditorD
 		this._overlayContainer.style.position = 'absolute';
 		this._overlayContainer.style.overflow = 'hidden';
 
-		this.layoutContainerOverShadowElement(dimension, position);
+		this.layoutContainerOverShadowElement(dimension, /*position*/ undefined);
 
 		if (this._webviewTransparentCover) {
 			this._webviewTransparentCover.style.height = `${dimension.height}px`;