Avoid displaying connection security level config when not needed (#4405)

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## Summary
<!-- Provide a brief summary of the changes you have made and most
importantly what they aim to achieve -->
Hide connection security level config when user has no internal URL set
or has one that is already HTTPS
## Screenshots
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screenshots in light and dark mode. -->

## Link to pull request in Documentation repository
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corresponding pull request in the Companion App Documentation repository
(https://github.com/home-assistant/companion.home-assistant). Please add
the number of this pull request after the "#" -->
Documentation: home-assistant/companion.home-assistant#

## Any other notes
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Sources/App/Settings/Connection/ConnectionSettingsView.swift

@@ -325,16 +325,18 @@ struct ConnectionSettingsView: View {
                 .buttonStyle(.plain)
             }
 
-            Button {
-                showSecurityLevelPicker = true
-            } label: {
-                NavigationRow(
-                    title: L10n.Settings.ConnectionSection.ConnectionAccessSecurityLevel.title,
-                    value: viewModel.securityLevel.description
-                )
-                .contentShape(Rectangle())
+            if viewModel.shouldShowSecurityLevelPicker {
+                Button {
+                    showSecurityLevelPicker = true
+                } label: {
+                    NavigationRow(
+                        title: L10n.Settings.ConnectionSection.ConnectionAccessSecurityLevel.title,
+                        value: viewModel.securityLevel.description
+                    )
+                    .contentShape(Rectangle())
+                }
+                .buttonStyle(.plain)
             }
-            .buttonStyle(.plain)
 
             Button {
                 viewModel.updateAppDatabase()

Sources/App/Settings/Connection/ConnectionSettingsViewModel.swift

@@ -50,6 +50,14 @@ final class ConnectionSettingsViewModel: ObservableObject {
         server.info.version <= .updateLocationGPSOptional
     }
 
+    var shouldShowSecurityLevelPicker: Bool {
+        guard let internalURL = server.info.connection.address(for: .internal) else {
+            return false
+        }
+
+        return internalURL.scheme?.lowercased() == "http"
+    }
+
     // MARK: - Initialization
 
     init(server: Server) {