Reproduction of BS2027: https://app.bugsplat.com/v2/crash?database=Noesis&id=2027

Crash when undoing a keyframe in a new transition, when the keyframe is selected.

See the video for reproduction steps: https://drive.google.com/file/d/1ohGGew0eFM9W9znq10AoyJC7H8CXeROB/view

App.StudioTool.exe!Noesis::BaseVector_::Size() Line 19
    at D:\Source\Noesis\NoesisStudio_Latest\NoesisSDK\Native\Src\Packages\Core\NSTL\Include\NsCore\Vector.inl(19)
App.StudioTool.exe!Noesis::BaseNode::GetChildrenCount() Line 1413
    at D:\Source\Noesis\NoesisStudio_Latest\NoesisSDK\Native\Src\Packages\Gui\Core\Src\XamlParser.cpp(1413)
App.StudioTool.exe!Editor::TextEditor::ElementListRemove(Noesis::NodeObject * node) Line 1509
    at D:\Source\Noesis\NoesisStudio_Latest\NoesisSDK\Native\Src\Packages\Gui\Studio\Src\TextEditor.cpp(1509)
App.StudioTool.exe!Editor::InsertNodeObjectMemento::Revert() Line 168
    at D:\Source\Noesis\NoesisStudio_Latest\NoesisSDK\Native\Src\Packages\Gui\Studio\Src\Memento.cpp(168)
App.StudioTool.exe!Editor::XamlUndoRedoCommand::Undo() Line 114
    at D:\Source\Noesis\NoesisStudio_Latest\NoesisSDK\Native\Src\Packages\Gui\Studio\Src\XamlUndoRedoCommand.cpp(114)
App.StudioTool.exe!Editor::UndoRedoSystem::Undo(Noesis::BaseComponent * __formal) Line 86
    at D:\Source\Noesis\NoesisStudio_Latest\NoesisSDK\Native\Src\Packages\Gui\Studio\Src\UndoRedoSystem.cpp(86)
App.StudioTool.exe!Editor::XamlDocument::Undo(Noesis::BaseComponent * __formal) Line 6122
    at D:\Source\Noesis\NoesisStudio_Latest\NoesisSDK\Native\Src\Packages\Gui\Studio\Src\XamlDocument.cpp(6122)