chore: unignore modules and use node-fetch

Author: ascorbic

.gitignore

@@ -150,3 +150,6 @@ packages/*/lib
 
 # Cypress
 cypress/screenshots
+
+# Test cases have node module fixtures
+!test/**/node_modules

test/e2e/edge-compiler-can-import-blob-assets/app/node_modules/my-pkg/hello/world.json

@@ -2,7 +2,7 @@
 import spawn from 'cross-spawn'
 import { existsSync, readFileSync, unlinkSync, writeFileSync } from 'fs'
 import { writeFile } from 'fs-extra'
-import { fetch } from 'undici'
+import { fetch } from 'node-fetch'
 import path from 'path'
 import qs from 'querystring'
 import { TextDecoderStream } from 'stream/web'