Return the expected type from the address/transactions/<address> endpoint (#1108)

This returns a view of the raw database but the client expects a simplified and preparsed output, which makes more sense.

This updates the interface accordingly, using the existing function that is exactly designed for this.

This only break the coded added in PayButton/paybutton#617 since the output of the api call was unused before.

Test Plan:
The api tests are still green.

Author: Fabcien

pages/api/address/transactions/[address].ts

@@ -1,7 +1,7 @@
 import { NextApiResponse, NextApiRequest } from 'next'
 import { parseAddress } from 'utils/validators'
 import { DEFAULT_TX_PAGE_SIZE, RESPONSE_MESSAGES, TX_PAGE_SIZE_LIMIT } from 'constants/index'
-import { fetchPaginatedAddressTransactions } from 'services/transactionService'
+import { fetchPaginatedAddressTransactions, getSimplifiedTransactions } from 'services/transactionService'
 import { upsertAddress } from 'services/addressService'
 import Cors from 'cors'
 import { runMiddleware } from 'utils/index'
@@ -37,7 +37,8 @@ export default async (req: NextApiRequest, res: NextApiResponse): Promise<void>
       const serverOnly = req.query.serverOnly === '1'
 
       try {
-        const transactions = await fetchPaginatedAddressTransactions(address, page, pageSize, orderBy, orderDesc)
+        const transactionsWithAddressAndPrices = await fetchPaginatedAddressTransactions(address, page, pageSize, orderBy, orderDesc)
+        const transactions = getSimplifiedTransactions(transactionsWithAddressAndPrices)
         res.status(200).send(transactions)
       } catch (err: any) {
         switch (err.message) {