do not drop a message which was not decrypted for a medium group

Instead, trigger a request to the group to get the encryption keypair.
We will try to process those messages on an app restart

ts/receiver/cache.ts

@@ -54,7 +54,7 @@ export async function getAllFromCache() {
       const attempts = _.toNumber(item.attempts || 0) + 1;
 
       try {
-        if (attempts >= 3) {
+        if (attempts >= 10) {
           window.log.warn(
             'getAllFromCache final attempt for envelope',
             item.id

ts/receiver/contentMessage.ts

@@ -127,7 +127,12 @@ async function decryptForClosedGroup(
       keypairRequestManager.markRequestSendFor(groupPubKey, Date.now());
       await requestEncryptionKeyPair(groupPubKey);
     }
-    await removeFromCache(envelope);
+    throw new Error(
+      `Waiting for an encryption keypair to be received for group ${groupPubKey.key}`
+    );
+    // do not remove it from the cache yet. We will try to decrypt it once we get the encryption keypair
+    // TODO drop it if after some time we still don't get to decrypt it
+    // await removeFromCache(envelope);
     return null;
   }
 }