[FancyZones]Modern apps snapping fix, refactor and tests (#29499)

* popup windows check

* use minimize maximize buttons check

* update test utils

* added tests

* define types for easier testing

* changed checks order

* remove option check

* upd test

* remove FZ popup option

* max min buttons -> caption

* calculator test

* updated excluded tests

* add asserts to child window test

* update window creation

* splash screen refactor

* remove hotfix part

* replace style checking functions

* remove no longer necessary check

* tool window check fix

* fix mouse snapping check

* added check and test for non-root window

* spelling

* Revert "remove FZ popup option"

This reverts commit 26732ad683.

* skip child window tests in CI

* remove the option

* remove the constant

* updated tests

src/settings-ui/Settings.UI/SettingsXAML/Views/FancyZonesPage.xaml

@@ -150,12 +150,6 @@
                             <controls:SettingsCard ContentAlignment="Left">
                                 <CheckBox x:Uid="FancyZones_MakeDraggedWindowTransparentCheckBoxControl" IsChecked="{x:Bind Mode=TwoWay, Path=ViewModel.MakeDraggedWindowsTransparent}" />
                             </controls:SettingsCard>
-                            <controls:SettingsCard ContentAlignment="Left">
-                                <custom:CheckBoxWithDescriptionControl
-                                    x:Uid="FancyZones_AllowPopupWindowSnap"
-                                    Margin="0,0,0,6"
-                                    IsChecked="{x:Bind Mode=TwoWay, Path=ViewModel.AllowPopupWindowSnap}" />
-                            </controls:SettingsCard>
                             <controls:SettingsCard ContentAlignment="Left">
                                 <CheckBox x:Uid="FancyZones_AllowChildWindowSnap" IsChecked="{x:Bind Mode=TwoWay, Path=ViewModel.AllowChildWindowSnap}" />
                             </controls:SettingsCard>

src/settings-ui/Settings.UI/ViewModels/FancyZonesViewModel.cs

@@ -629,24 +629,6 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
             }
         }
 
-        public bool AllowPopupWindowSnap
-        {
-            get
-            {
-                return _allowPopupWindowSnap;
-            }
-
-            set
-            {
-                if (value != _allowPopupWindowSnap)
-                {
-                    _allowPopupWindowSnap = value;
-                    Settings.Properties.FancyzonesAllowPopupWindowSnap.Value = value;
-                    NotifyPropertyChanged();
-                }
-            }
-        }
-
         public bool AllowChildWindowSnap
         {
             get