feat(statics): add staking feature to trx in testnet

SC-2211

TICKET: SC-2211

Author: noel-bitgo

modules/statics/src/coins.ts

@@ -456,7 +456,7 @@ export const coins = CoinMap.fromCoins([
     6,
     UnderlyingAsset.TRX,
     BaseUnit.TRX,
-    TRX_FEATURES
+    [...TRX_FEATURES, CoinFeature.STAKING]
   ),
   account(
     'a4578c23-8e01-4d13-bc17-7bf8b529fbef',