Add padding to the bottom of the beatmap listing overlay to avoid hovered panels exceeding visible bounds

Closes https://github.com/ppy/osu/issues/16120.

osu.Game/Beatmaps/Drawables/Cards/BeatmapCardContent.cs

@@ -3,16 +3,13 @@
 
 #nullable enable
 
-using System;
 using osu.Framework.Allocation;
 using osu.Framework.Bindables;
 using osu.Framework.Graphics;
 using osu.Framework.Graphics.Containers;
 using osu.Framework.Graphics.Effects;
 using osu.Framework.Graphics.Shapes;
-using osu.Framework.Input.Events;
 using osu.Framework.Threading;
-using osu.Framework.Utils;
 using osu.Game.Graphics.Containers;
 using osu.Game.Overlays;
 using osuTK;
@@ -157,53 +154,5 @@ namespace osu.Game.Beatmaps.Drawables.Cards
             }, BeatmapCard.TRANSITION_DURATION, Easing.OutQuint);
         }
 
-        private class ExpandedContentScrollContainer : OsuScrollContainer
-        {
-            public ExpandedContentScrollContainer()
-            {
-                ScrollbarVisible = false;
-            }
-
-            protected override void Update()
-            {
-                base.Update();
-
-                Height = Math.Min(Content.DrawHeight, 400);
-            }
-
-            private bool allowScroll => !Precision.AlmostEquals(DrawSize, Content.DrawSize);
-
-            protected override bool OnDragStart(DragStartEvent e)
-            {
-                if (!allowScroll)
-                    return false;
-
-                return base.OnDragStart(e);
-            }
-
-            protected override void OnDrag(DragEvent e)
-            {
-                if (!allowScroll)
-                    return;
-
-                base.OnDrag(e);
-            }
-
-            protected override void OnDragEnd(DragEndEvent e)
-            {
-                if (!allowScroll)
-                    return;
-
-                base.OnDragEnd(e);
-            }
-
-            protected override bool OnScroll(ScrollEvent e)
-            {
-                if (!allowScroll)
-                    return false;
-
-                return base.OnScroll(e);
-            }
-        }
     }
 }

osu.Game/Beatmaps/Drawables/Cards/ExpandedContentScrollContainer.cs

@@ -0,0 +1,61 @@
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// See the LICENCE file in the repository root for full licence text.
+
+using System;
+using osu.Framework.Input.Events;
+using osu.Framework.Utils;
+using osu.Game.Graphics.Containers;
+
+namespace osu.Game.Beatmaps.Drawables.Cards
+{
+    public class ExpandedContentScrollContainer : OsuScrollContainer
+    {
+        public const float HEIGHT = 400;
+
+        public ExpandedContentScrollContainer()
+        {
+            ScrollbarVisible = false;
+        }
+
+        protected override void Update()
+        {
+            base.Update();
+
+            Height = Math.Min(Content.DrawHeight, HEIGHT);
+        }
+
+        private bool allowScroll => !Precision.AlmostEquals(DrawSize, Content.DrawSize);
+
+        protected override bool OnDragStart(DragStartEvent e)
+        {
+            if (!allowScroll)
+                return false;
+
+            return base.OnDragStart(e);
+        }
+
+        protected override void OnDrag(DragEvent e)
+        {
+            if (!allowScroll)
+                return;
+
+            base.OnDrag(e);
+        }
+
+        protected override void OnDragEnd(DragEndEvent e)
+        {
+            if (!allowScroll)
+                return;
+
+            base.OnDragEnd(e);
+        }
+
+        protected override bool OnScroll(ScrollEvent e)
+        {
+            if (!allowScroll)
+                return false;
+
+            return base.OnScroll(e);
+        }
+    }
+}

osu.Game/Overlays/BeatmapListingOverlay.cs

@@ -186,7 +186,11 @@ namespace osu.Game.Overlays
                 AutoSizeAxes = Axes.Y,
                 Spacing = new Vector2(10),
                 Alpha = 0,
-                Margin = new MarginPadding { Vertical = 15 },
+                Margin = new MarginPadding
+                {
+                    Vertical = 15,
+                    Bottom = ExpandedContentScrollContainer.HEIGHT
+                },
                 ChildrenEnumerable = newCards
             };
             return content;