Add confirmation dialog to gestures reset button (#4260)

## Summary

Adds a confirmation dialog before resetting gesture settings to prevent
accidental data loss.

**Changes:**
- Added `showResetConfirmation` state to manage dialog visibility
- Modified reset button to trigger confirmation instead of immediate
reset
- Added `confirmationDialog` modifier applied directly to the button
with Yes/No action buttons
- Added localization strings: `gestures.reset.confirmation.title` and
`gestures.reset.confirmation.message`

Implementation follows existing patterns from `WatchConfigurationView`
and `CarPlayConfigurationView`.

## Screenshots


## Link to pull request in Documentation repository

Documentation: home-assistant/companion.home-assistant#

## Any other notes

N/A

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<summary>Original prompt</summary>

> In GesturesView add a confirmation dialog to the reset button


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Sources/App/Resources/en.lproj/Localizable.strings

@@ -303,6 +303,8 @@
 "gestures.category.page" = "Navigation";
 "gestures.category.servers" = "Servers";
 "gestures.footer.title" = "Customize gestures to be used on the frontend.";
+"gestures.reset.confirmation.message" = "This will reset all gestures to their default values.";
+"gestures.reset.confirmation.title" = "Reset Gestures?";
 "gestures.reset.title" = "Reset";
 "gestures.screen.body" = "Gestures below will be applied whenever you are using Home Assistant main UI.";
 "gestures.screen.title" = "Gestures";

Sources/App/Settings/Gestures/GesturesSetupView.swift

@@ -4,6 +4,7 @@ import SwiftUI
 struct GesturesSetupView: View {
     @StateObject private var viewModel = GesturesSetupViewModel()
     @State private var swipeRightState = HAGestureAction.showSidebar
+    @State private var showResetConfirmation = false
 
     @State var directions: [UISwipeGestureRecognizer.Direction] = [
         .left, .right, .up,
@@ -66,10 +67,22 @@ struct GesturesSetupView: View {
         .toolbar {
             ToolbarItem(placement: .topBarTrailing) {
                 Button(role: .destructive) {
-                    viewModel.resetGestures()
+                    showResetConfirmation = true
                 } label: {
                     Text(L10n.Gestures.Reset.title)
                 }
+                .confirmationDialog(
+                    L10n.Gestures.Reset.Confirmation.title,
+                    isPresented: $showResetConfirmation,
+                    titleVisibility: .visible
+                ) {
+                    Button(L10n.yesLabel, role: .destructive) {
+                        viewModel.resetGestures()
+                    }
+                    Button(L10n.noLabel, role: .cancel) {}
+                } message: {
+                    Text(L10n.Gestures.Reset.Confirmation.message)
+                }
             }
         }
     }

Sources/Shared/Resources/Swiftgen/Strings.swift

@@ -1338,6 +1338,12 @@ public enum L10n {
     public enum Reset {
       /// Reset
       public static var title: String { return L10n.tr("Localizable", "gestures.reset.title") }
+      public enum Confirmation {
+        /// This will reset all gestures to their default values.
+        public static var message: String { return L10n.tr("Localizable", "gestures.reset.confirmation.message") }
+        /// Reset Gestures?
+        public static var title: String { return L10n.tr("Localizable", "gestures.reset.confirmation.title") }
+      }
     }
     public enum Screen {
       /// Gestures below will be applied whenever you are using Home Assistant main UI.