Revert "Merge branch 'fix-2556' into improve-forum-performance"

This reverts commit 5aba03137a20cf968f3bbf20b846f3e20953040d.

pioneer/packages/joy-utils/src/transport/proposals.ts

@@ -187,14 +187,10 @@ export default class ProposalsTransport extends BaseTransport {
   }
 
   async voteByProposalAndMember (proposalId: ProposalId, voterId: MemberId): Promise<VoteKind | null> {
-    const votesEntries = await this.api.query.proposalsEngine.voteExistsByProposalByVoter.entries(proposalId);
-    const voteEntry = votesEntries.find((voteEntry) => {
-      const memberId = voteEntry[0].args[1] as MemberId;
+    const vote = (await this.proposalsEngine.voteExistsByProposalByVoter(proposalId, voterId)) as VoteKind;
+    const hasVoted = (await this.api.query.proposalsEngine.voteExistsByProposalByVoter.size(proposalId, voterId)).toNumber();
 
-      return memberId.eq(voterId);
-    });
-
-    return voteEntry ? voteEntry[1] as VoteKind : null;
+    return hasVoted ? vote : null;
   }
 
   async votes (proposalId: ProposalId): Promise<ProposalVotes> {