fix: Work around credentials not being enumerable

[frederikrothenberger]

Description

This PR fixes an issue that arises from assuming that the PublicKeyCredential returned from navigators.credentials.create is enumerable.

How Has This Been Tested?

Manual testing.

Checklist:

• [x] My changes follow the guidelines in CONTRIBUTING.md.
• [x] The title of this PR complies with Conventional Commits.
• [x] I have edited the CHANGELOG accordingly.
• [x] I have made corresponding changes to the documentation.