Fix "method_complexity" issue in client/src/hooks/useBatchExecutor.ts

[vysinsky]

Function useBatchExecutor has a Cognitive Complexity of 7 (exceeds 5 allowed). Consider refactoring.

https://codeclimate.com/github/vysinsky/sfcc-playground/client/src/hooks/useBatchExecutor.ts#issue_62b57df3ad42360001000090