prevent third-party types in twoslash snippets (#3309)

Co-authored-by: Jake Bailey <5341706+jakebailey@users.noreply.github.com>

Author: reillylm

packages/documentation/copy/en/javascript/JSDoc Reference.md

@@ -202,6 +202,7 @@ function walk(p) {
 import types can be used to get the type of a value from a module if you don't know the type, or if it has a large type that is annoying to type:
 
 ```js twoslash
+// @types: node
 // @filename: accounts.d.ts
 export const userAccount = {
   name: "Name",
@@ -765,6 +766,7 @@ Otherwise, `@example` will be parsed as a new tag.
 ### Other supported patterns
 
 ```js twoslash
+// @types: react
 class Foo {}
 // ---cut---
 var someObj = {

packages/typescriptlang-org/gatsby-config.js

@@ -14,6 +14,8 @@ if (process.env.BOOTSTRAPPING) {
 
 require("./scripts/ensureDepsAreBuilt")
 
+const ts = require("typescript");
+
 // https://github.com/gatsbyjs/gatsby/issues/1457
 require("ts-node").register({ files: true })
 const { join } = require("path")
@@ -158,6 +160,10 @@ module.exports = {
               defaultOptions: {
                 noErrorValidation: true,
               },
+              defaultCompilerOptions: {
+                types: [],
+                target: ts.ScriptTarget.ES2020,
+              },
             },
           },
           "gatsby-remark-copy-linked-files",