Add the initial implementation for managing spaces. (#4963)

This isn't hooked up into the flows yet.

ElementX/Sources/Other/SwiftUI/Views/ToolbarButton.swift

@@ -16,10 +16,11 @@ struct ToolbarButton: View {
 
         case cancel(title: String)
         case confirm(title: String)
+        case destructive(title: String)
         
         var title: String {
             switch self {
-            case .cancel(let title), .confirm(let title):
+            case .cancel(let title), .confirm(let title), .destructive(let title):
                 title
             }
         }
@@ -33,6 +34,9 @@ struct ToolbarButton: View {
             case .confirm:
                 CompoundIcon(\.check)
                     .foregroundStyle(.compound.iconOnSolidPrimary)
+            case .destructive:
+                CompoundIcon(\.delete)
+                    .foregroundStyle(.compound.iconOnSolidPrimary)
             }
         }
         
@@ -42,6 +46,8 @@ struct ToolbarButton: View {
                 .compound.bgCanvasDefault
             case .confirm:
                 .compound.bgAccentRest
+            case .destructive:
+                .compound.bgCriticalPrimary
             }
         }
     }
@@ -56,27 +62,13 @@ struct ToolbarButton: View {
                     .accessibilityLabel(role.title)
             }
             .tint(role.tint)
-            .buttonStyleGlassProminent()
+            .backportButtonStyleGlassProminent()
         } else {
             Button(role.title, action: action)
         }
     }
 }
 
-@available(iOS 26, *)
-private extension View {
-    @ViewBuilder
-    func buttonStyleGlassProminent() -> some View {
-        // `.glassProminent` breaks our preview tests so we need to disable it when running tests.
-        // https://github.com/pointfreeco/swift-snapshot-testing/issues/1029#issuecomment-3366942138
-        if ProcessInfo.isRunningTests {
-            self
-        } else {
-            buttonStyle(.glassProminent)
-        }
-    }
-}
-
 struct ToolbarButton_Previews: PreviewProvider, TestablePreview {
     static var previews: some View {
         NavigationStack {
@@ -88,6 +80,9 @@ struct ToolbarButton_Previews: PreviewProvider, TestablePreview {
                     ToolbarItem(placement: .cancellationAction) {
                         ToolbarButton(role: .cancel) { }
                     }
+                    ToolbarItem(placement: .primaryAction) {
+                        ToolbarButton(role: .destructive(title: L10n.actionRemove)) { }
+                    }
                 }
         }
     }