ensuring we use the application context for the datastore to avoid any local activity leaks

vector/src/main/java/im/vector/app/core/datastore/DataStoreProvider.kt

@@ -40,7 +40,7 @@ private class MappedPreferenceDataStoreSingletonDelegate : ReadOnlyProperty<Cont
         { key ->
             dataStoreCache.getOrPut(key) {
                 PreferenceDataStoreFactory.create {
-                    context.preferencesDataStoreFile(key)
+                    context.applicationContext.preferencesDataStoreFile(key)
                 }
             }
         }