fix(integration.trackerobjects): inset Assign/Unbind icon to match library row padding

Mirrors the inset applied to Select / Teleport / Remove in
LibraryProvider.cs (PR landing alongside this in fix/library-icon-padding):
sizeDelta -30 on the icon RectTransform so the link/unlink strokes
sit comfortably inside the bevel, matching the row's status-icon
column.

Author: towneh

Basis/Packages/com.basis.integration.trackerobjects/Runtime/BasisTrackerObjectsLibraryHook.cs

@@ -42,6 +42,8 @@ private static void OnRowCreated(RectTransform parent, BasisRuntimeSpawnRegistry
             button.Descriptor.SetTitle(string.Empty);
             button.SetIcon(hasBinding ? AddressableAssets.Sprites.Unlink : AddressableAssets.Sprites.Link);
             button.SetSize(RowSize);
+            // Match the row's left-side status-icon padding (PE Image Simple Square inset).
+            button.Descriptor.IconImage.rectTransform.sizeDelta = new Vector2(-30, -30);
 
             button.OnClicked += async () =>
             {