clearAll + same name checking before updating

app/src/main/java/org/thoughtcrime/securesms/dependencies/ConfigFactory.kt

@@ -441,7 +441,13 @@ class ConfigFactory @Inject constructor(
     }
 
     fun clearAll() {
-        //TODO: clear all configs
+        synchronized(userConfigs) {
+            userConfigs.clear()
+        }
+
+        synchronized(groupConfigs) {
+            groupConfigs.clear()
+        }
     }
 
     private class GroupSubAccountSwarmAuth(

app/src/main/java/org/thoughtcrime/securesms/groups/GroupManagerV2Impl.kt

@@ -826,8 +826,17 @@ class GroupManagerV2Impl @Inject constructor(
         withContext(dispatcher) {
             val adminKey = requireAdminAccess(groupId)
 
-            configFactory.withMutableGroupConfigs(groupId) {
-                it.groupInfo.setName(newName)
+            val nameChanged = configFactory.withMutableGroupConfigs(groupId) { configs ->
+                if (configs.groupInfo.getName() != newName) {
+                    configs.groupInfo.setName(newName)
+                    true
+                } else {
+                    false
+                }
+            }
+
+            if (!nameChanged) {
+                return@withContext
             }
 
             val timestamp = clock.currentTimeMills()