Adjust screenshot tests

[jeromelaban]

Some static UI tests have a dynamic aspect, which may cause them to appear in screenshots comparison. Those tests should either be excluded using [SampleControlInfo(..., ignoreInSnapshotTests: true)] or have their dynamic behavior removed or made manual.

List of Tests to exclude or adjust for the screenshot comparison:

• [ ] SequentialAnimations_SamplesApp_Windows_UI_Xaml_Media_Animation_SequentialAnimationsPage
• [ ] ToggleSwitch_TemplateReuseTest_UITests_Shared_Windows_UI_Xaml_Controls_ToggleSwitchControl_ToggleSwitch_TemplateReuse
• [ ] CommandBar_LongTitle_ValidationCommandBar-LongTitle-4-_Orientation_Landscape
• [ ] Animations_Sequential_Animations_SamplesApp_Windows_UI_Xaml_Media_Animation_SequentialAnimationsPage
• [ ] ComboBox_UITests_Shared_Windows_UI_Xaml_Controls_ComboBox_ComboBox_DropDownPlacement_UITests_Shared_Windows_UI_Xaml_Controls_ComboBox_ComboBox_DropDownPlacement
• [ ] Automation_AutomationProperties_Name_UITests_Shared_Windows_UI_Xaml_Automation_AutomationProperties_Name
• [ ] TextBox_Uno_UI_Samples_Content_UITests_TextBoxControl_PasswordBox_Reveal_Scroll_Uno_UI_Samples_Content_UITests_TextBoxControl_PasswordBox_Reveal_Scroll
• [ ] DatePickerFlyout_Unloaded_UITests_Shared_Windows_UI_Xaml_Controls_DatePicker_DatePicker_SampleContent
• [ ] Keyboard_Textbox_InsideScrollViewer_Validation0-_Remove_Focus_on_normalTextBox
• [ ] Keyboard_Textbox_InsideScrollViewer_Validation2-_Remove_Focus_on_placeholderTextTextBox
• [ ] Keyboard_Textbox_NoScrollViewer_Validation1-_Remove_Focus_on_filledTextBox
• [ ] Keyboard_Textbox_InsideScrollViewer_Validation5-_Remove_Focus_on_numberTextBox
• [ ] Default_Uno_UI_Samples_UITests_Image_Image_Stretch_Uno_UI_Samples_UITests_Image_Image_Stretch
• [ ] Image_UITests_Shared_Windows_UI_Xaml_Controls_ImageTests_Image_Stretch_Alignment_SizeOnControl_UITests_Shared_Windows_UI_Xaml_Controls_ImageTests_Image_Stretch_Alignment_SizeOnControl
• [ ] Image_Image_Stretch_Full_Taller_Uno_UI_Samples_UITests_Image_Image_Stretch_Full_Taller
• [ ] MediaPlayerElement_Using__3gp_UITests_Shared_Windows_UI_Xaml_Controls_MediaPlayerElement_MediaPlayerElement_3gp_Extension
• [ ] SamplesApp.Windows_UI_Xaml_Media.Animation.SequentialAnimationsPage
• [ ] UITests.Shared.Windows_UI_Xaml_Controls.ListView.ListView_Weird_Measure
• [ ] Draw_polygonPolygonPage-_ChangeShape
• [ ] LoadEmptyContentControlContentControlNoTemplateNoContent-_bntContentClear
• [ ] When_TransformToVisual_ScrollViewer_UITests_Shared_Windows_UI_Xaml_UIElementTests_TransformToVisual_ScrollViewer

[DavinaPinto]

Hello, I would like to contribute on this issue for my university assignment

[sasakrsmanovic]

@DavinaPinto Thanks so much for the work and your PR contribution! Please digi-sign the PR so it can go through all the automated checks. Welcome to Uno community, we are pleased to have you!

[DavinaPinto]

@sasakrsmanovic thankyou for assigning the issue to me, I have signed the PR