[MS-1605]Add face capture attempt events

[meladRaouf]

MS-1605
Will be released in: 2027.1.0

Notable changes

Adds a FaceCaptureAttemptEvent emitted once per face auto-capture attempt.

Design doc: [link]

Testing guidance

• enable face auto-capture, run an enrolment, and inspect the session upload — expect exactly one FaceCaptureAttempt event per attempt, with timeToFirstValidMs matching the attempt start, and run durations summing to endTime − startTime.
• Abandonment: press capture, stay too far so no valid frame is found, back out of the screen — one event with validFrameCount: 0 and no timeToFirstValidMs.
• Manual capture mode: no FaceCaptureAttempt event is emitted.
• Backend ingestion is not yet available; the event will be rejected on upload until Cloud adds the schema.

Additional work checklist

• Effect on other features and security has been considered
• Design document marked as "In development" (if applicable)
• External (Gitbook) and internal (Confluence) Documentation is up to date (or ticket created)
• Test cases in Testiny are up to date (or ticket created)
• Other teams notified about the changes (if applicable) — Cloud ticket for ingestion

[sonarqubecloud]

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
93.1% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud