core: show list of items in business template update dialog

This fixes a regression from 3ea8d425 (core: don't show list of items
in initial business template install, 2023-10-10), this dialog was also
used for business template update and it was never showing the list of
item.
30 jobs for for_testrunner_2 in 0 seconds (queued for 4 seconds)
Status Job ID Name Coverage
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