fix(default): support DropdownMenuItem onSelect (#4787)

fix(ui): add onSelect compat wrapper for DropdownMenuItem

Bridges Base UI DropdownMenu with Radix-style onSelect so existing consumers work without migration.

.dockerignore

@@ -8,4 +8,8 @@ docs
 .eslintcache
 .gocache
 /web/node_modules
+/web/default/node_modules
+/web/default/dist
+/web/classic/node_modules
+/web/classic/dist
 !THIRD-PARTY-LICENSES.md