[widevine] Fix to wrapped license, and saved debug files

[CastagnaIT]

Description

Services that make use of wrapped license wrap also the certificate response in same way
this is a mistake from the rework PR #1672

other commit changes are self explaining

Motivation and context

Slack user reported errors

How has this been tested?

Slack user confirm to works

Screenshots (if appropriate):

Types of change

• Bug fix (non-breaking change which fixes an issue)
• Clean up (non-breaking change which removes non-working, unmaintained functionality)
• Improvement (non-breaking change which improves existing functionality)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that will cause existing functionality to change)
• Cosmetic change (non-breaking change that doesn't touch code)
• None of the above (please explain below)

Checklist:

• I have read the Contributing document
• My code follows the Code Guidelines of this project
• My change requires a change to the Wiki documentation
• I have updated the documentation accordingly