[Bug] Inconsistent numbering sequence in EN/Home exercise section

[HappyEgoiste]

Preconditions:

1. Log in as an existing user
2. Select EN from the language switch.

Steps to reproduce:

1. Go to [Speech exercises]/[Words]/[Home] (https://brainup.site/groups/4/series/9/subgroup/74)

Actual result: Exercises number sequence and grouping is inconsistent: "my home" and "my home 1 noise" have the same exercises numbers, and "my home 2 noise" continues after "House" and is followed by "House +voices"

Expected result: Numbering is consistent and end-to-end, group order is "my home" - "my home 1 noise" - "my home 2 noise" - "House" - "House +voices"