HPCC-30677 Fix k8s::waitJob premature exit #6670

Job	Run time
Check Skip	18s
Build Bare Metal (ubuntu-20.04, mono, sudo, -DCMAKE_BUILD_TYPE=RelWithDebInfo -DINCLUDE_PLUGINS=O...	2s
Build Docker (ubuntu-22.04, k8s, true, schedule)	59s
Build Bare Metal (ubuntu-22.04, mono, sudo, -DCMAKE_BUILD_TYPE=RelWithDebInfo -DINCLUDE_PLUGINS=O...	20m 49s
Build Docker (ubuntu-22.04, schedule)	15s
Build Bare Metal (windows-2019, -T host=x64 -A x64 -DUSE_OPTIONAL=OFF -DCLIENTTOOLS_ONLY=ON -DUSE...	3s
Build Docker (ubuntu-20.04, schedule)	16s
Build Bare Metal (windows-2022, -T host=x64 -A x64 -DUSE_OPTIONAL=OFF -DCLIENTTOOLS_ONLY=ON -DUSE...	24m 34s
Build Docker (centos-8, schedule)	19s
Build Bare Metal (macos-11, mono, sudo, -DCMAKE_BUILD_TYPE=Release -DUSE_OPTIONAL=OFF -DCLIENTTOO...	4s
Build Docker (centos-7, pull_request)	25m 37s
Build Bare Metal (macos-12, mono, sudo, -DCMAKE_BUILD_TYPE=Release -DUSE_OPTIONAL=OFF -DCLIENTTOO...	15m 22s
Build Docker (amazonlinux, schedule)	1m 5s
Build Docker (centos-7, LN, true, schedule)	14s
	1h 29m 57s

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