fix time geneate logic and replace default datetime by luxon

src/Graphql/graphql.module.ts

@@ -95,7 +95,12 @@ import { initContextCache } from '@pothos/core'
           ...initContextCache(),
           isSubscription: false,
           http: {
+            req,
             me: await graphqlService.acquireContext(req),
+            invalidateCache: () =>
+              graphqlService.invalidateCache(
+                req.headers['x-session-id'] as string,
+              ),
           },
         }),
       }),