Fix babel initialization for graphql type generation (elastic#33962)

This restores the functionality of the graphql type generation scripts after elastic#33093. In particular, it properly sets up the babel import hook so schemata can once more be imported from `.ts/.tsx` files.

x-pack/plugins/infra/scripts/generate_types_from_graphql.js

@@ -4,6 +4,8 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
+require('../../../../src/setup_node_env');
+
 const { join, resolve } = require('path');
 // eslint-disable-next-line import/no-extraneous-dependencies, import/no-unresolved
 const { generate } = require('graphql-code-generator');

x-pack/plugins/uptime/scripts/infer_graphql_types.js

@@ -4,6 +4,8 @@
  * you may not use this file except in compliance with the Elastic License.
  */
 
+require('../../../../src/setup_node_env');
+
 const { resolve } = require('path');
 // eslint-disable-next-line import/no-extraneous-dependencies, import/no-unresolved
 const { generate } = require('graphql-code-generator');