Overview

This PR adds Send invoice by email in the bulk action menu for bulk invoice sending

Before

The Send Invoice by email action doesn't exist in the bulk action in the contribution search kit view

After

The Send Invoice by email action exists in the bulk action in the contribution search kit view

With the invoice-helper extension installed, the Template field is displayed

Technical Details

This functionality uses the CiviCRM CRM_Contribute_Form_Task_Invoice class to send the email, to avoid having to duplicate the code, this also allows us to keep other customizations provided by third-party extensions like invoice-helper to the bulk contribution email screen.

The caveat is that CRM_Contribute_Form_Task_Invoice class is meant to redirect to a contribution view after sending the email as hardcoded from the code. We introduced custom logic to override this redirect here