Getting Started polish (Fixes #128555)

src/vs/workbench/contrib/welcome/gettingStarted/browser/gettingStarted.css

@@ -456,7 +456,7 @@
 	height: 100%;
 	max-width: 1200px;
 	margin: 0 auto;
-	padding: 0 12px;
+	padding: 0 32px;
 	display: grid;
 	grid-template-columns: minmax(auto, 400px) 1fr;
 	grid-template-rows: minmax(40px, 20%) auto max-content 1fr;

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

@@ -672,6 +672,8 @@ export class GettingStartedPage extends EditorPane {
 						width: 80%;
 						left: 50%;
 						top: 50%;
+						max-width: 530px;
+						min-width: 350px;
 						transform: translate(-50%,-50%);
 					}
 				</style>

src/vs/workbench/contrib/welcome/gettingStarted/common/media/commandPalette.svg

-<svg viewBox="0 0 520 220" fill="none" xmlns="http://www.w3.org/2000/svg">
-<rect width="520" height="220" fill="var(--vscode-editor-background, #1e1e1e)"/>
+<svg viewBox="0 0 520 260" fill="none" xmlns="http://www.w3.org/2000/svg">
+<rect width="520" height="260" fill="var(--vscode-editor-background, #1e1e1e)"/>
 <g clip-path="url(#clip0)">
 <rect width="520" height="39" fill="var(--vscode-editorGroupHeader-tabsBackground, #252526)"/>
 <g clip-path="url(#clip1)">