Rewrite tx list with innerHTML, fix scrollbar overlay and overflow

- Rebuilt tx list rendering using innerHTML instead of createElement
- scrollbar-gutter: stable on body to prevent content shift
- max-width:42ch instead of width:42ch to prevent horizontal overflow
- overflow-x:hidden on body and #app

src/popup/views/helpers.js

@@ -76,7 +76,7 @@ function balanceLine(symbol, amount, price) {
     const usd = price ? formatUsd(amount * price) : "";
     return (
         `<div class="flex text-xs">` +
-        `<span class="flex justify-between" style="width:42ch">` +
+        `<span class="flex justify-between" style="max-width:42ch">` +
         `<span>${symbol}</span>` +
         `<span>${qty}</span>` +
         `</span>` +