fix: removed hardcoded Environment (#214)

Changing Environment doesn't work on Widget

## Description

Removal of hardcoded `Testnet` in widget

Author: saadahmsiddiqui

packages/widget/src/controllers/transfers/fungible-token-transfer.ts

@@ -37,6 +37,7 @@ import {
   estimateEvmTransactionsGasCost,
   estimateSubstrateGas
 } from '../../utils/gas';
+import type { FungibleTokenTransfer } from '../../components';
 import { buildEvmFungibleTransactions, executeNextEvmTransaction } from './evm';
 import {
   buildSubstrateFungibleTransactions,
@@ -95,7 +96,7 @@ export class FungibleTokenTransferController implements ReactiveController {
   protected executeSubstrateTransaction = executeNextSubstrateTransaction;
 
   protected config: Config;
-  protected env: Environment = Environment.MAINNET;
+  protected env: Environment;
   //source network chain id -> Route[]
   protected routesCache: Map<number, Route[]> = new Map();
 
@@ -146,6 +147,8 @@ export class FungibleTokenTransferController implements ReactiveController {
   constructor(host: ReactiveElement) {
     (this.host = host).addController(this);
     this.config = new Config();
+    this.env =
+      (this.host as FungibleTokenTransfer).environment ?? Environment.MAINNET;
 
     this.walletContext = new ContextConsumer(host, {
       context: walletContext,

packages/widget/src/widget.ts

@@ -84,7 +84,7 @@ class SygmaProtocolWidget
 
   connectedCallback(): void {
     super.connectedCallback();
-    const env = import.meta.env.VITE_BRIDGE_ENV ?? Environment.MAINNET;
+    const env = this.environment ?? Environment.MAINNET;
     if (Object.values(Environment).includes(env as Environment)) {
       this.environment = env as Environment;
     } else {
@@ -120,7 +120,7 @@ class SygmaProtocolWidget
                 .environment=${this.environment as Environment}
                 .onSourceNetworkSelected=${(domain: Domain) =>
                   (this.sourceNetwork = domain)}
-                environment=${Environment.TESTNET}
+                environment=${this.environment ?? Environment.MAINNET}
                 .whitelistedSourceNetworks=${this.whitelistedSourceNetworks}
                 .whitelistedDestinationNetworks=${this
                   .whitelistedDestinationNetworks}