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/index.html

@@ -201,7 +201,7 @@
                     class="flex text-xs mb-3 cursor-pointer"
                     title="Click to copy"
                 >
-                    <span id="address-full" style="width: 42ch"></span>
+                    <span id="address-full" style="max-width: 42ch"></span>
                     <span
                         id="address-usd-total"
                         class="text-right text-muted flex-1"