sessions - update item height when approving (#306146)

Author: bpasero

src/vs/sessions/contrib/sessions/browser/views/sessionsList.ts

@@ -689,11 +689,13 @@ export class SessionsList extends Disposable implements ISessionsList {
 
 		const showMoreRenderer = new SessionShowMoreRenderer();
 
+		const delegate = new SessionsTreeDelegate(approvalModel);
+
 		this.tree = this._register(instantiationService.createInstance(
 			WorkbenchObjectTree<SessionListItem, FuzzyScore>,
 			'SessionsListTree',
 			this.listContainer,
-			new SessionsTreeDelegate(approvalModel),
+			delegate,
 			[
 				sessionRenderer,
 				new SessionSectionRenderer(true /* hideSectionCount */, instantiationService, contextKeyService),
@@ -751,7 +753,7 @@ export class SessionsList extends Disposable implements ISessionsList {
 
 		this._register(sessionRenderer.onDidChangeItemHeight(session => {
 			if (this.tree.hasElement(session)) {
-				this.tree.updateElementHeight(session, undefined);
+				this.tree.updateElementHeight(session, delegate.getHeight(session));
 			}
 		}));