Icons: Cache Bookmark icons (#91332)

scripts/webpack/webpack.common.js

@@ -106,7 +106,7 @@ module.exports = {
       },
       // for pre-caching SVGs as part of the JS bundles
       {
-        test: /(unicons|mono|custom)[\\/].*\.svg$/,
+        test: /(unicons|mono|custom|solid)[\\/].*\.svg$/,
         type: 'asset/source',
       },
       {