Changes to Event Option Value Selections on Pending (Pay Later) Contribution Not Creating Correct Financial Items Causing Imbalance in Accounting Batch Export

Reproduced on http://dmaster.demo.civicrm.org/:

1. Create pending pay later event registration with quantity selections (see revent_registration_original.png)
2. Pending pay later contribution no showing any financial transactions as expected (see event_contribution_original.png)
3. Edit selections on event registration (see event_registration_updated_selections.png)
4. Pending pay later contribution STILL no showing any financial transactions as expected (see event_contribution_updated_selections.png)
5. The values in civicrm_financial_item.amount remain at the original amount. There should be entries reflecting this change

Happy to test PR when one becomes available.

Kind regards,
Tamar