chore(vscode): update to 1.53.2

These conflicts will be resolved in the following commits. We do it this way so
that PR review is possible.

lib/vscode/src/vs/base/common/errors.ts

@@ -142,6 +142,15 @@ export function isPromiseCanceledError(error: any): boolean {
 	return error instanceof Error && error.name === canceledName && error.message === canceledName;
 }
 
+// !!!IMPORTANT!!!
+// Do NOT change this class because it is also used as an API-type.
+export class CancellationError extends Error {
+	constructor() {
+		super(canceledName);
+		this.name = this.message;
+	}
+}
+
 /**
  * Returns an error that signals cancellation.
  */