Ensure all mods are incompatible in both ways

[tsunyoku]

After #19200 and #19201, it seemed appropriate to add an extra test that all mods are two-way incompatible.

[tsunyoku]

Tests seem to be failing as it fails to find the instance of the mod it's comparing to (in some cases). The line which is causing it: https://github.com/ppy/osu/pull/19203/files#diff-38c0d7d7fdbeef4006389cbdab55fdb19f0c26c9152d500287ea7e8d91ed7765R39

Kinda unsure why, maybe someone else has an idea?

[ggliv]

Mods can declare incompatibility with other mods that may not necessarily be included in the same ruleset. For example, CatchModHalfTime inherits incompatibility with ModAdaptiveSpeed from ModRateAdjust despite the catch ruleset not having an implementation of ModAdaptiveSpeed.

I'd suggest that you run the test locally with a debugger attached before pushing more commits to avoid unnecessary CI congestion.

[peppy]

Kinda unsure why, maybe someone else has an idea?

Are you unable to debug this locally? It should be immediately apparent by checking what the fail cases are (this is a 100% failure).

[peppy]

As this seemed abandoned I fixed the remaining issue with the test. Looks to work as expected.