refactor: return koptions directly

Author: durran

src/mongo_client.ts

@@ -425,7 +425,7 @@ export class MongoClient extends TypedEventEmitter<MongoClientEvents> {
 
   /** @see MongoOptions */
   get options(): Readonly<MongoOptions> {
-    return Object.freeze({ ...this[kOptions] });
+    return this[kOptions];
   }
 
   get serverApi(): Readonly<ServerApi | undefined> {

src/sessions.ts

@@ -174,7 +174,7 @@ export class ClientSession extends TypedEventEmitter<ClientSessionEvents> {
     this.sessionPool = sessionPool;
     this.hasEnded = false;
     this.clientOptions = clientOptions;
-    this.timeoutMS = options.defaultTimeoutMS ?? client.s.options?.timeoutMS;
+    this.timeoutMS = options.defaultTimeoutMS ?? client.options?.timeoutMS;
 
     this.explicit = !!options.explicit;
     this[kServerSession] = this.explicit ? this.sessionPool.acquire() : null;