fix: make sure to clear a reaction is the count is 0 on an opengroup

ts/session/apis/open_group_api/sogsv3/sogsV3MutationCache.ts

@@ -38,13 +38,10 @@ export function getMutationCache() {
 function verifyEntry(entry: SogsV3Mutation): boolean {
   return Boolean(
     entry.server &&
-      entry.server !== '' &&
       entry.room &&
-      entry.room !== '' &&
       entry.changeType === ChangeType.REACTIONS &&
       entry.metadata.messageId &&
       entry.metadata.emoji &&
-      entry.metadata.emoji !== '' &&
       (entry.metadata.action === 'ADD' ||
         entry.metadata.action === 'REMOVE' ||
         entry.metadata.action === 'CLEAR')

ts/util/reactions.ts

@@ -317,12 +317,17 @@ const handleOpenGroupMessageReactions = async (
         senders.push(reactor);
       });
 
-      reacts[emoji] = {
-        count: reactions[key].count,
-        index: reactions[key].index,
-        senders,
-        you,
-      };
+      if (reactions[key].count > 0) {
+        reacts[emoji] = {
+          count: reactions[key].count,
+          index: reactions[key].index,
+          senders,
+          you,
+        };
+      } else {
+        // tslint:disable-next-line: no-dynamic-delete
+        delete reacts[key];
+      }
     });
 
     originalMessage.set({