fix(graphql): remove ESM-broken require() check so check works (#5654)

_checkRequirements() called require('axios'), which is undefined in ESM.
The ReferenceError was caught and reported the deps as missing, so
`npx codeceptjs check` failed with a false 'axios not installed' error.
Return null instead, matching REST/ApiDataFactory/Playwright helpers;
missing deps already fail at import time.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: DavertMik

lib/helper/GraphQL.js

@@ -54,11 +54,9 @@ class GraphQL extends Helper {
   }
 
   static _checkRequirements() {
-    try {
-      require('axios')
-    } catch (e) {
-      return ['axios']
-    }
+    // In ESM, axios is already imported at the top, so no need to check
+    // The import will fail at module load time if axios is missing
+    return null
   }
 
   static _config() {

lib/helper/GraphQLDataFactory.js

@@ -175,12 +175,9 @@ class GraphQLDataFactory extends Helper {
   }
 
   static _checkRequirements() {
-    try {
-      require('axios')
-      require('rosie')
-    } catch (e) {
-      return ['axios', 'rosie']
-    }
+    // In ESM, dependencies are already imported at the top
+    // The import will fail at module load time if dependencies are missing
+    return null
   }
 
   _after() {