vscode window is in float mode from time to time.

I am using yabai version 7.1.16 on macOS 15.6. The issue is not consistently reproducible, but it occurs frequently when VSCode is started from iTerm2. The problem is that even I use `yabai -m window --toggle float`, and observing `"is-float":false` in the window properties, the Code window remains floating.

Start by reproducing the issue when VSCode is launched from iTerm2, then inspect the window properties around `yabai -m window --toggle float`, especially the `is-float` value. Done means the command consistently changes whether the Code window is actually floating, or the failure is narrowed to a reproducible condition.

Written by the indexing model from the issue text.