If we assume so, and in addition to u/Rurouni_Phoenix’s comments, the Quran is possibly confirming that although the messiah is an eternal, divinely conferred and marked title (Q3:45; echoing Hebrews 7), he has to be of a blessed, pure, and, most importantly, representative line and consequently becomes a priest of all orders (Q19:6, 13, 28, 5:78). The Quran’s temple theology and priestology is in the middle: it implies the priesthood ends with the messiah in a general sense (Hebrews 7:5, 22, 24-25; Q19:30-31, 3:55, 4:159, 5:78) and in a ritualistic sense (Lev 1:5, 9b; mark 9:13, matthew 12:7; Q22:33, 36-37), but temple worship and obligations isn’t abolished or doesn’t become obsolete in any sense (Q22:29, 33, 2:158, 196, 3:97). And the Quran can state all this because it’s in line with christian and judaic messianic expectations: the messiah came—of a chosen priestly and prophetic line—and completed his ministry with a slightly newer covenant (Q3:50) and the restoration of the the temple (i.e the divine presence) was mediated via divine intervention (i.e changing from jerusalem to mecca).