Revert "chore: prevent error loading node oauth client when testing"

This reverts commit dc27dcc.

Author: userquin

server/plugins/oauth-client.ts

@@ -4,10 +4,6 @@ import type { NodeOAuthClient } from '@atproto/oauth-client-node'
  * Creates a long living instance of the NodeOAuthClient.
  */
 export default defineNitroPlugin(async nitroApp => {
-  if (import.meta.test) {
-    return
-  }
-
   const oauthClient = await getNodeOAuthClient()
 
   // Attach to event context for access in composables via useRequestEvent()