Order and possibly includestage=0 is broken for stages in select.def

[Jesuszilla]

Describe the bug

Order is broken for order=0 (order=0 for stages ought to not be included at all, especially if incluestage=0). Seems to be specific to characters with random as their stage.

To Reproduce

1. Download the zip here
2. Run an arcade match (may have to repeat a few times)
3. Notice how stage3d is loaded for the opponent despite it being order=0 in [ExtraStages] and includestage=0 for the character it is assigned to.

Expected behavior

order=0 stages (or any order without character assignments for that matter) should not be considered for random. Ever.

Screenshots / Video

Engine Version (or source code date)

Nightly (2024/12/27)

Operating system

macOS

Extra context or search terms

No response