home: disable context menu on Big Sur

Due to various SwiftUI issues that only occur on Big Sur, we will just
disable the context menu to avoid showing broken UI.

Users should use the toolbar for the same actions.

Resolves #5147

Platform/Shared/VMContextMenuModifier.swift

@@ -24,6 +24,34 @@ struct VMContextMenuModifier: ViewModifier {
     @State private var shareItem: VMShareItemModifier.ShareItem?
     
     func body(content: Content) -> some View {
+        #if os(macOS)
+        if #unavailable(macOS 12) {
+            bodyBigSur(content: content)
+        } else {
+            bodyFull(content: content)
+        }
+        #else
+        return bodyFull(content: content)
+        #endif
+    }
+    
+    #if os(macOS)
+    @ViewBuilder func bodyBigSur(content: Content) -> some View {
+        content.contextMenu {
+            Button {
+                NSWorkspace.shared.activateFileViewerSelecting([vm.pathUrl])
+            } label: {
+                Label("Show in Finder", systemImage: "folder")
+            }
+        }
+    }
+    #endif
+    
+    /// Full context menu for anything other than Big Sur
+    /// - Parameter content: Content
+    /// - Returns: View
+    @available(macOS 12, *)
+    @ViewBuilder func bodyFull(content: Content) -> some View {
         content.contextMenu {
             #if os(macOS)
             Button {