fix: standardize relative timestamping (#3612)

* fix(frontend): relative timestamps are incorrectly rounded.

Closes: #1371

* fix(all): remove legacy fromNow for proper relative timestamp creation

Closes: #1395

apps/frontend/src/pages/user/[id].vue

@@ -360,6 +360,7 @@ import {
   ContentPageHeader,
   commonMessages,
   NewModal,
+  useRelativeTime,
 } from "@modrinth/ui";
 import { isStaff } from "~/helpers/users.js";
 import NavTabs from "~/components/ui/NavTabs.vue";