Hide prev button while loading (microsoft#182984)

Author: bhavyaus

src/vs/workbench/contrib/welcomeGettingStarted/browser/gettingStarted.ts

@@ -1502,12 +1502,14 @@ export class GettingStartedPage extends EditorPane {
 		if (toEnable === 'categories') {
 			slideManager.classList.remove('showDetails');
 			slideManager.classList.add('showCategories');
+			this.container.querySelector<HTMLButtonElement>('.prev-button.button-link')!.style.display = 'none';
 			this.container.querySelector('.gettingStartedSlideDetails')!.querySelectorAll('button').forEach(button => button.disabled = true);
 			this.container.querySelector('.gettingStartedSlideCategories')!.querySelectorAll('button').forEach(button => button.disabled = false);
 			this.container.querySelector('.gettingStartedSlideCategories')!.querySelectorAll('input').forEach(button => button.disabled = false);
 		} else {
 			slideManager.classList.add('showDetails');
 			slideManager.classList.remove('showCategories');
+			this.container.querySelector<HTMLButtonElement>('.prev-button.button-link')!.style.display = 'block';
 			this.container.querySelector('.gettingStartedSlideDetails')!.querySelectorAll('button').forEach(button => button.disabled = false);
 			this.container.querySelector('.gettingStartedSlideCategories')!.querySelectorAll('button').forEach(button => button.disabled = true);
 			this.container.querySelector('.gettingStartedSlideCategories')!.querySelectorAll('input').forEach(button => button.disabled = true);

src/vs/workbench/contrib/welcomeGettingStarted/browser/media/gettingStarted.css

@@ -678,6 +678,7 @@
 	padding: 0 2px 2px;
 	margin: 10px;
 	z-index: 1;
+	display: none;
 }
 
 .monaco-workbench .part.editor>.content .gettingStartedContainer.width-semi-constrained .prev-button.button-link {