fix: last purchase rate not updated from purchase invoice (backport #42847) (#42853) fix: last purchase rate not updated from purchase invoice (#42847) (cherry picked from commit5b9309cf34) Co-authored-by: rohitwaghchaure <rohitw1991@gmail.com> (cherry picked from commit2203ea9301) Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>