fix(cat-voices): wrong date in campaign ends countdown (#2582)

Co-authored-by: Dominik Toton <[email protected]>

Author: LynxLynxx

catalyst_voices/packages/internal/catalyst_voices_blocs/lib/src/campaign/campaign_stage/campaign_stage_cubit.dart

@@ -32,12 +32,13 @@ class CampaignStageCubit extends Cubit<CampaignStageState> {
       );
       final dateRangeStatus = campaignTimeline.timeline.rangeStatusNow();
       final startDate = campaignTimeline.timeline.from;
+      final endDate = campaignTimeline.timeline.to;
 
       return switch (dateRangeStatus) {
         DateRangeStatus.after => emit(const AfterProposalSubmissionStage()),
         DateRangeStatus.before => emit(PreProposalSubmissionStage(startDate: startDate)),
         DateRangeStatus.inRange => {
-            _startCountdownTimer(startDate),
+            _startCountdownTimer(endDate),
             emit(const ProposalSubmissionStage()),
           }
       };