Fix PR #16677, a parameter was missing in a function call (#17033)

Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>

changelog.d/17033.bugfix

@@ -0,0 +1 @@
+Fix server notice rooms not always being created as unencrypted rooms, even when `encryption_enabled_by_default_for_room_type` is in use (server notices are always unencrypted).

synapse/handlers/room.py

@@ -956,6 +956,7 @@ class RoomCreationHandler:
             room_alias=room_alias,
             power_level_content_override=power_level_content_override,
             creator_join_profile=creator_join_profile,
+            ignore_forced_encryption=ignore_forced_encryption,
         )
 
         # we avoid dropping the lock between invites, as otherwise joins can