Update vscode-nls in notebook and samples, plus fix samples compilation (#4203)

- Upate vscode-nls to 4.0.0 in notebook extension. Should be fix for Insiders build failure due to localization package failing
- Updated samples to remove as vscode-nls if not needed, or update if still needed
- Updated samples using `npm audit fix`
- Fixed compile errors in all the samples

samples/sqlservices/src/controllers/treeDataProvider.ts

@@ -255,7 +255,7 @@ export class TreeNode implements sqlops.TreeComponentItem {
 export class TreeDataProvider implements sqlops.TreeComponentDataProvider<TreeNode> {
 		private _onDidChangeTreeData = new vscode.EventEmitter<TreeNode>();
 		constructor(private _root: TreeNode) {
-			if(this._root) {
+			if (this._root) {
 				this._root.onTreeChange(node => {
 					this._onDidChangeTreeData.fire(node);
 				});