Entity Print Content Modification For Views
I don't think that your template suggestion is correct in this case, so {{content.field_bright_news}} may not work.
A few things I can clarify for you are as follows:
{{content.field_bright_news}} - this variable is only available in the template of the content type containing that field, it cannot be used in the view template.
For your quote, it is missing the following:

By default this module only installs the PDF view mode for Nodes. If you have any custom entities on your Drupal site and want to hide the &quot;View PDF&quot; link on those, you must first create a PDF view mode for the entity type. To do this navigate to &quot;admin / structure / display-modes / view&quot; and click on &quot;Add view mode&quot;. In the list click the entity type for which you would like to create the PDF view mode. You'll now be asked to name the view mode, you can name it whatever you like but make sure the machine name is just &quot;pdf&quot;, which will be automatically prefixed with the entity name. You can now follow the steps in the previous paragraphs for your custom entity.

That is, you must create a display mode for that content type to have a template suggesting as the form
node--content_type--display_mode.html.twig
And that means, {{content.field_bright_news}} can be used in the template suggested above.