`GraphNode` overflows last child when one of the previous children has vertical sizing set to fill expand

[nagidev]

Godot version

v4.2.stable.official [46dc277]

System information

Godot v4.2.stable - Pop!_OS 22.04 LTS - X11 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1650 (nvidia; 535.129.03) - Intel(R) Core(TM) i5-9300H CPU @ 2.40GHz (8 Threads)

Issue description

Setting the vertical sizing flag to Fill Expand of a child of a GraphNode that is not last fills the space until the last child is almost outside the GraphNode. Trying the same setup with a VBoxContainer node instead shows the expected behavior.

Steps to reproduce

1. Add a GraphNode
2. Add any Control node as its child, then add another so there are at least two child nodes.
3. Select a child node that is not the last one, and set it's vertical sizing in layout section to enable Fill & Expand.
4. The last child node will be positioned almost outside the GraphNode

Minimal reproduction project

MRP.zip

[dohnud]

Same bug! It gets weirder when you add more nodes too

[ASamBlur]

This was fixed in #95389