Moves author creation for Addressable notes to outside a @synchronized block to avoid deadlocks.

app/src/main/java/com/vitorpamplona/amethyst/model/LocalCache.kt

@@ -119,19 +119,27 @@ object LocalCache {
     }
 
     @Synchronized
-    fun getOrCreateAddressableNote(key: ATag): AddressableNote {
+    fun getOrCreateAddressableNoteInternal(key: ATag): AddressableNote {
         checkNotInMainThread()
 
         // we can't use naddr here because naddr might include relay info and
         // the preferred relay should not be part of the index.
         return addressables[key.toTag()] ?: run {
             val answer = AddressableNote(key)
-            answer.author = checkGetOrCreateUser(key.pubKeyHex)
             addressables.put(key.toTag(), answer)
             answer
         }
     }
 
+    fun getOrCreateAddressableNote(key: ATag): AddressableNote {
+        val note = getOrCreateAddressableNoteInternal(key)
+        // Loads the user outside a Syncronized block to avoid blocking
+        if (note.author == null) {
+            note.author = checkGetOrCreateUser(key.pubKeyHex)
+        }
+        return note
+    }
+
     fun consume(event: MetadataEvent) {
         // new event
         val oldUser = getOrCreateUser(event.pubKey)