Do not install solidus_admin preview

This is a fundamental change that we de not support
right now.

Rakefile

@@ -15,12 +15,16 @@ task default: %i[test_setup spec]
 desc "Setup test app"
 task :test_setup do
   solidus_version = ENV.fetch("SOLIDUS_VERSION", "4.3")
+  solidus_install_options = "--payment-method=none --frontend=none --authentication=none"
+  if solidus_version >= "4.3"
+    solidus_install_options += " --admin-preview=false"
+  end
   Dir.chdir("spec/dummy") do
     system <<~SETUP
       bin/rake db:environment:set db:drop && \
       bin/rake gutentag:install:migrations && \
       bin/rails g gutentag:migration_versions && \
-      bin/rails g solidus:install --force --auto-accept --no-seed --no-sample --payment-method none --frontend none --authentication none && \
+      bin/rails g solidus:install --force --auto-accept --no-seed --no-sample #{solidus_install_options} && \
       bin/rails g solidus_frontend:install --force --auto-accept && \
       bin/rails javascript:install:esbuild && \
       bin/rails g alchemy:solidus:install --auto-accept --skip && \