[Bug]: some commands used by useCart composable does not return error object

[bartoszherba]

Expected Behavior

All commands executing graphql requests should (if applicable) return errors so the application can handle it.

Actual Behavior

Some commands eg. removeItemCommand do not return error data in the response.

Possible Solution

Update returning data structure to include the error object and handle it in the composable.
Broken commands are:

• updateItemQtyCommand
• removeItemCommand
• loadTotalQtyCommand (this might require a bigger change and maybe should be excluded from this list)
• some actions in loadCartCommand

Example implementation can be found in the applyCouponCommand

Steps to reproduce

No response

What version of Magento 2 integration are you using?

• any

What version of Node.js are you using?

• any

What browser (and version) are you using?

• any

What operating system (and version) are you using?

• any

Relevant log output

No response

Code of Conduct

• I agree to follow this project's Code of Conduct