[Localization]: Fix ViewLocalizer so it works for layouts too

[kirthik]

ViewLocalizer cannot be used on layout pages since the logic in Contextualize method reads current view to get the resources file. Since ViewContext.View property does not point to layout, layout specific resources are not localized. Today we have to use IStringLocalizer for this scenario.

We should come up with a solution where ViewLocalizer works for layouts too.

[danroth27]

@DamianEdwards