Removal of deprecated shop fields

As of Admin GraphQL API 2025-01, some previously deprecated fields have been removed which have replacements:

• Shop.collectionByHandle → QueryRoot.collectionByHandle
• Shop.collectionSavedSearches → QueryRoot.collectionSavedSearches
• Shop.customerSavedSearches → QueryRoot.customerSavedSearches
• Shop.draftOrderSavedSearches → QueryRoot.draftOrderSavedSearches
• Shop.marketingEvents → QueryRoot.marketingEvents
• Shop.orderSavedSearches → QueryRoot.orderSavedSearches
• Shop.productByHandle → QueryRoot.productByHandle
• Shop.productSavedSearches → QueryRoot.productSavedSearches