feat: add missing cancel button to dialog

Squashed commit of the following:

commit 69fcc5b9950a1d4edf00f19bef65c9a1b6bc83a6
Author: Ushie <ushiekane@gmail.com>
Date:   Sat Apr 29 15:28:03 2023 +0300

    feat: change `continue anyways` to `cancel`

commit 8786bae
Author: Andris <sebokandris2009@gmail.com>
Date:   Sun Apr 23 09:40:26 2023 +0200

    feat:add continue anyway button to feature not implemented dialog

lib/ui/views/app_selector/app_selector_viewmodel.dart

@@ -132,6 +132,21 @@ class AppSelectorViewModel extends BaseViewModel {
               ],
             ),
           ),
+          const SizedBox(height: 10),
+          CustomMaterialButton(
+            isFilled: false,
+            onPressed: () {
+              Navigator.pop(context);
+              Navigator.pop(context);
+            },
+            label: Row(
+              mainAxisAlignment: MainAxisAlignment.center,
+              children: [
+                const SizedBox(width: 10),
+                I18nText('cancelButton'),
+              ],
+            ),
+          ),
         ],
       ),
     );