Screen Edge Snapping does not use existing Layouts

**Describe the bug**
When using "Enable Window suggestions for screen edge snapping" and moving a tile to the edge the suggested layout is not one of the existing layouts

**To Reproduce**
Steps to reproduce the behavior:
1. In my case I only have layouts that are vertically separated. All horizontal Layouts are removed (see screenshot)
2. Go to Settings and Enable "Enable Window suggestions for screen edge snapping"
3. Have at least 2 windows open
4. Drag First window to left side for it to snap
5. Now there will be "Window suggestions" on where to Tile the other Window
6. The used layout for this has a horizontal split even though I don't have any layouts like that (see second screenshto

**Screenshots**

My Layouts

Suggested Layout

If applicable, add screenshots to help explain your problem.

**Information (please complete the following):**
- Tiling Shell version: 17.1
- GNOME version: 48
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**Additional context**
Add any other context about the problem here.