Fix invalid flashlight size calculation

This regressed in #20714. One usage of `getSizeFor(0)` was replaced by
`adjustSize(GetSize())`, but another usage of `getSizeFor(Combo.Value)`
was replaced by `adjustSize(Combo.Value)`, which is not correct, since
`adjustSize()` is expecting to receive a combo-based size, rather than a
combo value directly.

osu.Game.Rulesets.Taiko/Mods/TaikoModFlashlight.cs

@@ -75,7 +75,7 @@ protected override void Update()
                     FlashlightPosition = ToLocalSpace(taikoPlayfield.HitTarget.ScreenSpaceDrawQuad.Centre);
 
                     ClearTransforms(targetMember: nameof(FlashlightSize));
-                    FlashlightSize = adjustSize(Combo.Value);
+                    FlashlightSize = adjustSize(GetSize());
 
                     flashlightProperties.Validate();
                 }