HPCC-30998 Fix post-mortem files being attached to wrong workunit. #7067

Job	Run time
Check Skip	18s
Build Docker (ubuntu-22.04, k8s, true, schedule)	58s
Build Docker (ubuntu-22.04, schedule)	15s
Build Docker (ubuntu-20.04, schedule)	12s
Build Bare Metal (ubuntu-20.04, mono, sudo, -DCMAKE_BUILD_TYPE=RelWithDebInfo -DINCLUDE_PLUGINS=O...	2s
Build Docker (centos-8, schedule)	15s
Build Bare Metal (ubuntu-22.04, mono, sudo, -DCMAKE_BUILD_TYPE=RelWithDebInfo -DINCLUDE_PLUGINS=O...	21m 14s
Build Docker (centos-7, pull_request)	45m 35s
Build Bare Metal (windows-2019, -T host=x64 -A x64 -DUSE_OPTIONAL=OFF -DCLIENTTOOLS_ONLY=ON -DUSE...	3s
Build Docker (amazonlinux, schedule)	14s
Build Bare Metal (windows-2022, -T host=x64 -A x64 -DUSE_OPTIONAL=OFF -DCLIENTTOOLS_ONLY=ON -DUSE...	13m 5s
Build Docker (centos-7, LN, true, schedule)	44s
Build Bare Metal (macos-11, mono, sudo, -DCMAKE_BUILD_TYPE=Release -DUSE_OPTIONAL=OFF -DCLIENTTOO...	3s
Build Bare Metal (macos-12, mono, sudo, -DCMAKE_BUILD_TYPE=Release -DUSE_OPTIONAL=OFF -DCLIENTTOO...	14m 39s
	1h 37m 37s

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