Task add_picklist_entries always sets a default value for record types

[MarkusFroehler]

Describe the bug

When the task add_picklist_entries is used with the "--record_types" parameter, always the last value provided in "entries" is set as a default value for each given record type. This happens even if for all entries the option "default: False" has been set.

This behavior prevents usage of the ETL task for picklist fields without default values on objects with record types. Or is there some workaround with a modified task configuration?

Reproduction steps

1. Create a task with this definition

    add_picklist_values_reason_for_inactivity:
        class_path: cumulusci.tasks.metadata_etl.picklists.AddPicklistEntries
        description:
            This is done as CumulusCI post-deploy step, because of a known issue with deployment of
            picklist fields during unlocked package upgrade
            (https://trailblazer.salesforce.com/issues_view?id=a1p3A0000003Uk2QAE)
        options:
            picklists:
                - Account.Reason_For_Inactivity__c
            entries:
                - fullName: Deletion by Request
                  default: False
                - fullName: Deletion after Retention Period
                  default: False
                - fullName: Blacklist
                  default: False
                - fullName: Deceased
                  default: False
                - fullName: Inactive
                  default: False
            record_types:
                - HH_Account
                - Organization

2. Run it with "cci task run add_picklist_values_reason_for_inactivity"
3. Open the Account object in Object Manager and open each of the record types HH_Account and Organization. Click on "Edit" next to the picklist field Reason_For_Inactivity__c and check the "Default" dropdown: it is set to "Inactive" but should be "<None>"

Your CumulusCI and Python versions

CumulusCI version: 3.72.0 Python version: 3.10.6

Operating System

Windows

Windows environment

Bash on Windows

CumulusCI installation method

pip

Error Gist

No response

Additional information

Post in the CumulusCI Trailblazer Community group: https://trailhead.salesforce.com/trailblazer-community/feed/0D54S00000NEcU1SAL