Sorting page "A to Z" don't order correctly numbers 1, 10, 11, 12, ..., 2, 3, 4..., 9

[Thatoo]

Describe the bug
To ensure the way we want page to be sorted, we add number to their title to have something like :

1. title1
  1.1 title 1.1
  1.2 title 1.2
  1.3 title 1.3
2. title 2
  2.1 title 2.1
  2.2 title 2.2
3. title 3
4. ....
....
10. title 10
11. title 11
....
19. title 19

but we get in result soemthing like

1. title1
  1.1 title 1.1
  1.2 title 1.2
  1.3 title 1.3
10. title 10
11. title 11
12. title 12
....
19. title 19
2. title 2
  2.1 title 2.1
  2.2 title 2.2
3. title 3
4. ....

To Reproduce
Steps to reproduce the behavior:

1. Go to Collectives
2. Writes pages and subpages using classical ordered/numbered list
3. set oredring A to Z
4. see wrong ordering made by collectives.

Expected behavior
Collectives should order pages respecting ordered/numbered list pages

Screenshots

Server details:

• Collectives app version: 2.14.2
• Nextcloud version: 29.0.5
• PHP Version: 8.3.10
• Database: MariaDB 10.5.23

Client details:

• OS: NixOS 24.05
• Browser: Firefox
• Browser version: 129.0.2
• Device: Computer