git: openjdk/jdk-sandbox: parttimenerd_jfr_cpu_time_sampler: Record thread obtain failure as failed event

[duke]

Changeset: 1a661a01
Author:    Johannes Bechberger <johannes.bechberger at sap.com>
Date:      2024-06-10 12:44:43 +0000
URL:       https://git.openjdk.org/jdk-sandbox/commit/1a661a016acb393ce13684b170de1aed93998f4f

Record thread obtain failure as failed event

! src/hotspot/share/jfr/periodic/sampling/jfrCPUTimeThreadSampler.cpp