Refs #24072 - fix compute profile with CR set via HG

When compute resource is set via compute profile, we're not sending it
via the form (as it's disabled). Therefore, we need to search for in via
hostgroup.

Refs #24072 - fix selecting hostgroup with compute resource

Without this fix, the 'Virtual Machine' tab was giving:

'mybox' not found on 'libvirt (Libvirt)' 'mybox' could
   be deleted or 'libvirt (Libvirt)' is not responding.

Fixes #24022 - unattended error input is UTF-8 friendly (#5761)

Fixes #24109 - common kernelcmd param for all OSes

Fixes #23196 - Add default values for cores and socket in VM

Fixes #23808 - monotonic timer to measure durations

Fixes #23920 - add missing header in welcome pages

Fixes #24057 - Email subject prefix accepts long strings (#5742)

Fixes #23994 - Do not update templates out of scope

Fixes #23991 - rephrase RSS setting description