fix: fix the change of variable name is_dtrader_v2 in trade store (deriv-com#17769)

Author: vinu-deriv

packages/trader/src/Stores/Modules/Trading/trade-store.ts

@@ -1789,7 +1789,7 @@ export default class TradeStore extends BaseStore {
         this.resetErrorServices();
         await this.setContractTypes();
         runInAction(async () => {
-            if (!this.is_dtrader_v2_enabled) {
+            if (!this.is_dtrader_v2) {
                 this.processNewValuesAsync(
                     { currency: this.root_store.client.currency || this.root_store.client.default_currency },
                     true,