Error: Object of class Drupal\Core\TypedData\Plugin\DataType\StringData could not be converted to string

Problem/Motivation

I was testing this module out just by doing something silly with loading an entity, fetcing a field value and setting the node title to the extracted value. I'm getting the error when clicking the action button.

Error: Object of class Drupal\Core\TypedData\Plugin\DataType\StringData could not be converted to string in Drupal\eca_field_widget_actions\Plugin\Action\SetWidgetValue->execute() (line 62 of /var/www/html/web/modules/contrib/eca_field_widget_actions/src/

Steps to reproduce

Here's my exported config:

uuid: 112bca29-ce1c-46b3-b970-d82bd2d818ab
langcode: en
status: true
dependencies:
  config:
    - field.field.node.page.field_test
    - field.storage.node.field_test
    - user.role.administrator
  module:
    - eca_content
    - eca_field_widget_actions
    - modeler_api
    - user
third_party_settings:
  modeler_api:
    modeler_id: workflow_modeler
    data: 'hash:1c9cbdcef7a0722f856db18efb4e87ea'
    label: 'Field Widget Action'
    version: 1.0.0
id: field_widget_action
weight: 0
template: false
events:
  eca_field_widget_4xeidwwk:
    plugin: 'eca_field_widget_actions:eca_field_widget'
    label: 'ECA Field Widget'
    configuration: {  }
    successors:
      -
        id: add_a_role_to_the_selected_users_vsnlqoz7
        condition: ''
conditions: {  }
gateways: {  }
actions:
  add_a_role_to_the_selected_users_vsnlqoz7:
    label: 'Add a role to the selected users'
    plugin: user_add_role_action
    configuration:
      rid: administrator
    successors:
      -
        id: entity_load_yhhxogaz
        condition: ''
  entity_load_yhhxogaz:
    label: 'Entity: load'
    plugin: eca_token_load_entity
    configuration:
      token_name: ''
      from: id
      entity_type: node
      entity_id: '9'
      revision_id: ''
      properties: ''
      langcode: _interface
      latest_revision: true
      unchanged: false
      object: my_entity
    successors:
      -
        id: entity_get_field_value_32l6f727
        condition: ''
  entity_get_field_value_32l6f727:
    label: 'Entity: get field value'
    plugin: eca_get_field_value
    configuration:
      field_name: field_test
      token_name: my_field
      object: my_entity
    successors:
      -
        id: set_field_widget_value_e8euumku
        condition: ''
  set_field_widget_value_e8euumku:
    label: 'Set field widget value'
    plugin: eca_set_field_widget_value
    configuration:
      widget_value: '[my_field:0:title]'
    successors: {  }

Proposed resolution

When debugging $value, i'm see a typed data object. So on this line: https://git.drupalcode.org/project/eca_field_widget_actions/-/blob/1.0.x...

It appears, we should be doing $value = $value->getValue()

I'm not sure if thats actually the appropriate fix as on line 50 it's also doing that but wasn't sure what DataTransferObject is without digging in deeper.