When time traveling, Quality-time only shows historical measurements for metrics in the current report

[fniessink]

The endpoint /api/v3/subject/<subject_uuid>/measurements calls metrics_of_subject() which doesn't look at the report date passed:

def metrics_of_subject(database: Database, subject_uuid: SubjectId) -> list[MetricId]:
    """Return all metric uuid's for one subject, without the entities, except for the most recent one."""
    report_filter: dict = {f"subjects.{subject_uuid}": DOES_EXIST, "last": True}
    projection: dict = {"_id": False, f"subjects.{subject_uuid}.metrics": True}
    report = database.reports.find_one(report_filter, projection=projection)
    return list(report["subjects"][subject_uuid]["metrics"].keys())