fix: hide proposal scheduled time if submission is not accepted

Only show the scheduled time and 'View Invitation' button in My Proposals
when the submission status is 'accepted'.

Fixes #4583

Co-authored-by: Marco Acierno <marcoacierno@users.noreply.github.com>

Author: github-actions[bot]

frontend/src/components/my-proposals-profile-page-handler/my-proposals-table.tsx

@@ -37,7 +37,8 @@ export const MyProposalsTable = ({ submissions }: Props) => {
     <Table
       cols={4}
       rowGetter={(row) => {
-        const inSchedule = row.scheduleItems.length > 0;
+        const isAccepted = row.status === "accepted";
+        const inSchedule = isAccepted && row.scheduleItems.length > 0;
         return [
           <div>
             <EventTag type={row.type.name.toLowerCase()} />