Avoid double slash in block explorer links

The Etherscan base URLs in `chains.ts` carry a trailing slash, so every
Ethereum link rendered as `etherscan.io//address/...`. Browsers tolerate
it, but the acreBTC and withdrawal queue links in the vault details
modal are specified without it. Normalises the prefix in
`createBlockExplorerLink` so all chains are handled the same way.

Author: r-czajkowski

dapp/src/utils/chainUtils.ts

@@ -6,10 +6,14 @@ import { Chain, ExplorerDataType } from "#/types"
 //  However, it provides us with an easy way
 // to handle the next data for block explorer.
 const createBlockExplorerLink = (
-  prefix: string,
+  rawPrefix: string,
   id: string,
   type: ExplorerDataType,
 ) => {
+  // Some explorer base URLs carry a trailing slash, which would otherwise
+  // produce a double slash in the resulting link.
+  const prefix = rawPrefix.replace(/\/+$/, "")
+
   switch (type) {
     case "address":
       return `${prefix}/address/${id}`