Add Support for NavigateTo within EventToCommandBehavior

[brianlagunas]

Description of Change

Added support for the NavigateTo markup extension to work within the Prism EventToCommandBehavior. You can now do something like this:

        <ListView ItemsSource="{Binding Authors}">
            <ListView.Behaviors>
                <prism:EventToCommandBehavior EventName="ItemTapped"
                                              Command="{prism:NavigateTo 'AuthorDetailPage'}"
                                              EventArgsParameterPath="Item" />
            </ListView.Behaviors>
        </ListView>

Bugs Fixed

• [Bug] Cannot navigate via EventToCommandBehavior in XAML #2484

API Changes

NONE

Behavioral Changes

NavigateTo now works with the EventToCommandBehavior

PR Checklist

• Has tests (if omitted, state reason in description)
• Rebased on top of master at time of PR
• Changes adhere to coding standard

[dansiegel]

/azp run

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