Add a testing library for ui-extensions#3899

kumar303 merged 1 commit into2026-04-rcShopify/ui-extensions:2026-04-rcfrom

02-11-create_a_testing_library_for_ui-extensions_proof_of_concept_Shopify/ui-extensions:02-11-create_a_testing_library_for_ui-extensions_proof_of_concept_Copy head branch name to clipboard