HPCC-30992 Fix intermittent deadlock in roxie worker->server communication #7040

Job	Run time
Check Skip	22s
Build Docker (ubuntu-22.04, k8s, true, schedule)	5m 7s
Build Bare Metal (ubuntu-20.04, mono, sudo, -DCMAKE_BUILD_TYPE=RelWithDebInfo -DINCLUDE_PLUGINS=O...	2s
Build Docker (ubuntu-22.04, schedule)	1m 32s
Build Bare Metal (ubuntu-22.04, mono, sudo, -DCMAKE_BUILD_TYPE=RelWithDebInfo -DINCLUDE_PLUGINS=O...	45m 51s
Build Docker (ubuntu-20.04, schedule)	3m 37s
Build Bare Metal (windows-2019, -T host=x64 -A x64 -DUSE_OPTIONAL=OFF -DCLIENTTOOLS_ONLY=ON -DUSE...	2s
Build Docker (centos-8, schedule)	6m 3s
Build Bare Metal (windows-2022, -T host=x64 -A x64 -DUSE_OPTIONAL=OFF -DCLIENTTOOLS_ONLY=ON -DUSE...	14m 48s
Build Docker (centos-7, pull_request)	42m 11s
Build Bare Metal (macos-11, mono, sudo, -DCMAKE_BUILD_TYPE=Release -DUSE_OPTIONAL=OFF -DCLIENTTOO...	3s
Build Docker (amazonlinux, schedule)	5m 40s
Build Docker (centos-7, LN, true, schedule)	1m 14s
Build Bare Metal (macos-12, mono, sudo, -DCMAKE_BUILD_TYPE=Release -DUSE_OPTIONAL=OFF -DCLIENTTOO...	18m 48s
	2h 25m 20s

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