.rubocop.yml: excludes the override of CatalogController's index method.
app/views/*: uses newly created instance variable to feed homepage verification.
config/initializers/catalog_index_override.rb: updates excluded params with _ga and provides that test result to the view.
spec/system/front_page_spec.rb: makes sure visiting /?_ga=2.254463560.1947920273.1649182547-1700922359.1649079393 produces the same results as the homepage.
_gaand provides that test result to the view./?_ga=2.254463560.1947920273.1649182547-1700922359.1649079393produces the same results as the homepage.