Activate edit mode when tabbing between fields in product editor

inventory/src/components/product-editor/EditableInput.tsx

@@ -87,6 +87,7 @@ export function EditableInput({
       <button
         type="button"
         onClick={() => setEditing(true)}
+        onFocus={() => setEditing(true)}
         className="flex items-center gap-1.5 flex-1 min-w-0"
       >
         {label && (