[webauthn] Add WPTs for Signal methods
Add WPTs for:
- signalUnknownCredential
- signalCurrentUserDetails
- signalAllAcceptedCredentials
Bug: 361751877
Change-Id: Iae31d62c28621aab2d2cd8aac952f842fd67c95e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5850213
Auto-Submit: Nina Satragno nsatragno@chromium.org
Commit-Queue: Nina Satragno nsatragno@chromium.org
Reviewed-by: Martin Kreichgauer martinkr@google.com
Cr-Commit-Position: refs/heads/main@{#1354733}