Merge from vscode 4636be2b71c87bfb0bfe3c94278b447a5efcc1f1 (#8722)

* Merge from vscode 4636be2b71c87bfb0bfe3c94278b447a5efcc1f1

* remove tests that aren't working

src/vs/monaco.d.ts

@@ -996,6 +996,11 @@ declare namespace monaco.editor {
 		 * An object that can be used by the web worker to make calls back to the main thread.
 		 */
 		host?: any;
+		/**
+		 * Keep idle models.
+		 * Defaults to false, which means that idle models will stop syncing after a while.
+		 */
+		keepIdleModels?: boolean;
 	}
 
 	/**
@@ -3802,6 +3807,11 @@ declare namespace monaco.editor {
 		 * An event emitted after composition has ended.
 		 */
 		onCompositionEnd(listener: () => void): IDisposable;
+		/**
+		 * An event emitted when users paste text in the editor.
+		 * @event
+		 */
+		onDidPaste(listener: (range: Range) => void): IDisposable;
 		/**
 		 * An event emitted on a "mouseup".
 		 * @event
@@ -4751,7 +4761,7 @@ declare namespace monaco.languages {
 		preselect?: boolean;
 		/**
 		 * A string or snippet that should be inserted in a document when selecting
-		 * this completion.
+		 * this completion. When `falsy` the [label](#CompletionItem.label)
 		 * is used.
 		 */
 		insertText: string;