git: openjdk/jdk-sandbox: parttimenerd_jfr_cpu_time_sampler3: Only record samples with a valid thread id

[duke]

Changeset: b32571f0
Author:    Johannes Bechberger <johannes.bechberger at sap.com>
Date:      2024-06-24 13:43:11 +0000
URL:       https://git.openjdk.org/jdk-sandbox/commit/b32571f0570bab8c732a4711edca1eba89f45b0d

Only record samples with a valid thread id

! src/hotspot/share/jfr/periodic/sampling/jfrCPUTimeThreadSampler.cpp
! src/jdk.jfr/share/classes/jdk/jfr/internal/query/FieldBuilder.java
! src/jdk.jfr/share/classes/jdk/jfr/internal/query/view.ini