A couple of small tweaks. (#4569)

* Stop ignoring the safe area with the suggestions view.

They weren't visible on iPad (hidden behind the sidebar) and I can't find any instance when they're shown where the safe area comes into play.

* Make sure the room list deselects the cell when dismissed a room.

* Use the backports pattern in more places.

* Fix the annoying header on macOS.

* Silence some warnings

* Fix compound CI branch name.

ElementX/Sources/Screens/Spaces/SpaceListScreen/View/SpaceListScreen.swift

@@ -20,14 +20,7 @@ struct SpaceListScreen: View {
         }
         .navigationTitle(L10n.screenSpaceListTitle)
         .navigationBarTitleDisplayMode(.inline)
-        .toolbar {
-            if #available(iOS 26, *) {
-                toolbar
-                    .sharedBackgroundVisibility(.hidden)
-            } else {
-                toolbar
-            }
-        }
+        .toolbar { toolbar }
         .background(Color.compound.bgCanvasDefault.ignoresSafeArea())
         .bloom()
     }
@@ -90,11 +83,13 @@ struct SpaceListScreen: View {
             }
             .accessibilityLabel(L10n.commonSettings)
         }
+        .backportSharedBackgroundVisibility(.hidden)
         
         ToolbarItem(placement: .principal) {
             // Hides the navigationTitle (which is set for the navigation stack label).
             Text("").accessibilityHidden(true)
         }
+        .backportSharedBackgroundVisibility(.hidden)
     }
 }