feat(coderd/database): use `template_usage_stats` in `GetTemplateInsightsByInterval` query#12667

mafredri merged 2 commits intomaincoder/coder:mainfrom

mafredri/rewrite-gettemplateinsightsbyintervalcoder/coder:mafredri/rewrite-gettemplateinsightsbyintervalCopy head branch name to clipboard