chore: removed widget amount cast to string

Author: ignaciosantise

packages/core/src/controllers/OnRampController.ts

@@ -497,7 +497,7 @@ export const OnRampController = {
         destinationCurrencyCode: quote.destinationCurrencyCode,
         paymentMethodType: quote.paymentMethodType,
         serviceProvider: quote.serviceProvider,
-        sourceAmount: quote.sourceAmount.toString(),
+        sourceAmount: quote.sourceAmount,
         sourceCurrencyCode: quote.sourceCurrencyCode,
         walletAddress: AccountController.state.address!,
         redirectUrl: metadata?.redirect?.universal ?? metadata?.redirect?.native

packages/core/src/utils/TypeUtil.ts

@@ -335,7 +335,7 @@ export interface BlockchainApiOnRampWidgetRequest {
   destinationCurrencyCode: string;
   paymentMethodType: string;
   serviceProvider: string;
-  sourceAmount: string;
+  sourceAmount: number;
   sourceCurrencyCode: string;
   walletAddress: string;
   redirectUrl?: string;